| Country name | 2007 | 2008 | 2009 | 2010 | ||
|---|---|---|---|---|---|---|
| Afghanistan | 7.0 | 6.9 | 9.1 | 10.1 |
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| Albania | ||||||
| Algeria | 39.5 | 47.2 | 37.3 |
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| American Samoa | ||||||
| Andorra | ||||||
| Angola | ||||||
| Antigua and Barbuda | ||||||
| Argentina | ||||||
| Armenia | 21.4 | 22.9 | 22.3 | 22.4 |
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| Aruba | ||||||
| Australia | 26.3 | 26.4 | 24.6 |
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| Austria | 37.2 | 37.3 | 36.6 |
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| Azerbaijan | 25.8 | |||||
| Bahamas, The | 16.1 | 17.3 | 16.9 | 16.9 |
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| Bahrain | 28.8 | |||||
| Bangladesh | 10.3 | 11.0 | 11.1 |
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| Barbados | 37.1 | 35.6 |
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| Belarus | 38.3 | 38.9 | 35.3 | 31.7 |
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| Belgium | 40.1 | 41.0 | 40.1 | 40.7 |
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| Belize | ||||||
| Benin | 18.6 | 17.7 | 18.2 |
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| Bermuda | ||||||
| Bhutan | 20.4 | 22.6 | 22.9 |
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| Bolivia | 23.3 | |||||
| Bosnia and Herzegovina | 40.0 | 39.1 | 38.6 | 39.7 |
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| Botswana | ||||||
| Brazil | 23.2 | 23.6 | 23.1 |
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| Brunei Darussalam | ||||||
| Bulgaria | 34.9 | 35.0 | 32.4 |
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| Burkina Faso | 13.8 | 13.4 | 14.0 | 15.6 |
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| Burundi | ||||||
| Cambodia | 11.2 | 12.5 | 11.1 | 12.2 |
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| Cameroon | ||||||
| Canada | 19.1 | 18.1 | 17.9 | 17.2 |
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| Cape Verde | 31.2 | 33.7 | 28.0 |
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| Cayman Islands | ||||||
| Central African Republic | ||||||
| Chad | ||||||
| Chile | 27.4 | 25.8 | 20.4 | 22.0 |
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| China | 16.8 | 11.1 | 11.9 |
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| Colombia | 24.1 | 15.3 | 16.9 | 18.2 |
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| Comoros | ||||||
| Congo, Dem. Rep. | 15.4 | 19.5 | 23.2 | 23.4 |
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| Congo, Rep. | ||||||
| Costa Rica | 25.2 | 24.7 |
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| Cote d'Ivoire | 19.2 | 18.9 | 18.9 |
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| Croatia | 35.5 | 34.6 | 33.8 | 32.9 |
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| Cuba | ||||||
| Curacao | ||||||
| Cyprus | 78.5 | 75.5 | 39.7 |
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| Czech Republic | 31.3 | 31.4 | 29.1 | 29.6 |
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| Denmark | 40.7 | 39.9 | 39.8 |
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| Djibouti | ||||||
| Dominica | ||||||
| Dominican Republic | 17.6 | 16.4 | 14.5 |
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| Ecuador | ||||||
| Egypt, Arab Rep. | 27.1 | 27.6 | 26.9 | 24.8 |
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| El Salvador | 19.4 | 20.5 | 17.9 | 19.2 |
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| Equatorial Guinea | ||||||
| Eritrea | ||||||
| Estonia | 31.6 | 30.9 | 36.8 |
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| Ethiopia | ||||||
| Faeroe Islands | ||||||
| Fiji | ||||||
| Finland | 38.7 | 38.8 |
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| France | 42.3 | 42.2 | 40.9 |
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| French Polynesia | ||||||
| Gabon | ||||||
| Gambia, The | ||||||
| Georgia | 24.0 | 25.7 | 25.2 | 23.8 |
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| Germany | 28.4 | 28.5 | 29.7 |
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| Ghana | 15.7 | 15.7 | 15.4 |
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| Greece | 39.4 | 38.9 | 37.1 |
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| Greenland | ||||||
| Grenada | ||||||
| Guam | ||||||
| Guatemala | 12.6 | 11.9 | 10.9 |
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| Guinea | ||||||
| Guinea-Bissau | ||||||
| Guyana | ||||||
| Haiti | ||||||
| Honduras | 22.1 | 22.7 | 21.0 | 21.1 |
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| Hong Kong SAR, China | 22.8 | 19.7 | 20.7 |
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| Hungary | 38.7 | 40.7 | 41.3 |
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| Iceland | 34.8 | 32.2 | 29.5 | 30.2 |
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| India | 14.2 | 12.6 | 11.2 | 11.4 |
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| Indonesia | 17.6 | 19.5 | 15.4 | 15.1 |
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| Iran, Islamic Rep. | 34.8 | 32.2 | 31.9 |
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| Iraq | ||||||
| Ireland | 33.6 | 32.4 | 31.0 |
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| Isle of Man | ||||||
| Israel | 39.5 | 36.8 | 34.1 | 35.3 |
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| Italy | 37.4 | 37.4 | 38.4 |
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| Jamaica | 32.2 | 30.5 | 25.9 |
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| Japan | ||||||
| Jordan | 28.8 | 25.0 | 23.5 | 21.8 |
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| Kazakhstan | 14.0 | 13.4 | 9.2 | 9.9 |
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| Kenya | 18.7 | 19.4 | 19.7 | 20.3 |
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| Kiribati | ||||||
| Korea, Dem. Rep. | ||||||
| Korea, Rep. | 24.2 | 24.0 | 23.0 | 22.7 |
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| Kosovo | ||||||
| Kuwait | 57.5 | 51.8 | 55.5 |
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| Kyrgyz Republic | 20.7 | 20.1 | 18.8 | 20.2 |
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| Lao PDR | 13.1 | 13.4 | 14.0 | 14.2 |
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| Latvia | 26.6 | 26.1 | 25.9 | 25.0 |
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| Lebanon | 20.9 | 20.9 | 22.2 |
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| Lesotho | 63.3 | 65.2 |
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| Liberia | 0.3 | 0.4 |
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| Libya | ||||||
| Liechtenstein | ||||||
| Lithuania | 28.7 | 28.7 | 28.6 | 27.4 |
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| Luxembourg | 37.0 | 37.2 | 39.0 | 38.5 |
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| Macao SAR, China | 29.6 | 33.7 | 33.3 | 36.9 |
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| Macedonia, FYR | 32.5 | 32.9 |
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| Madagascar | 11.9 | 14.2 |
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| Malawi | ||||||
| Malaysia | 21.8 | 21.5 | 23.3 | 20.8 |
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| Maldives | 33.6 | 30.1 | 24.0 |
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| Mali | 17.1 | 15.5 | 17.1 |
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| Malta | 38.7 | 37.9 | 38.1 | 37.0 |
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| Marshall Islands | ||||||
| Mauritania | ||||||
| Mauritius | 23.5 | 22.7 |
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| Mayotte | ||||||
| Mexico | ||||||
| Micronesia, Fed. Sts. | ||||||
| Moldova | 34.2 | 34.4 | 32.6 | 31.6 |
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| Monaco | ||||||
| Mongolia | 37.6 | 30.8 | 26.8 | 33.7 |
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| Montenegro | ||||||
| Morocco | 34.8 | 36.4 | 33.3 | 31.8 |
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| Mozambique | ||||||
| Myanmar | ||||||
| Namibia | 29.2 | |||||
| Nepal | 11.9 | 12.3 | 14.1 | 15.2 |
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| Netherlands | 40.6 | 41.9 | 40.9 |
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| New Caledonia | ||||||
| New Zealand | 36.1 | |||||
| Nicaragua | 19.7 | 19.0 | 18.9 | 19.7 |
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| Niger | 13.5 | |||||
| Nigeria | 8.1 | 9.7 |
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| Northern Mariana Islands | ||||||
| Norway | 50.0 | 51.2 | 48.8 | 47.7 |
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| Oman | ||||||
| Pakistan | 14.5 | 13.4 | 14.0 | 13.8 |
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| Palau | ||||||
| Panama | ||||||
| Papua New Guinea | ||||||
| Paraguay | 17.1 | 16.8 | 19.0 | 18.1 |
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| Peru | 20.0 | 20.0 | 17.7 | 18.5 |
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| Philippines | 15.2 | 15.2 | 14.0 | 13.4 |
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| Poland | 32.7 | 31.9 | 30.0 |
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| Portugal | 36.5 | 36.2 | 34.5 |
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| Puerto Rico | ||||||
| Qatar | 40.0 | 34.9 | 47.2 |
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| Romania | 25.3 | 30.9 |
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| Russian Federation | 31.3 | 33.7 | 25.5 | 26.8 |
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| Rwanda | ||||||
| Samoa | ||||||
| San Marino | 45.0 | 45.8 |
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| Sao Tome and Principe | ||||||
| Saudi Arabia | ||||||
| Senegal | ||||||
| Serbia | 40.1 | 39.4 | 38.9 | 37.5 |
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| Seychelles | 36.2 | 36.6 | 35.5 | 36.4 |
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| Sierra Leone | 10.8 | 11.3 | 11.8 |
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| Singapore | 19.6 | 20.9 | 18.1 | 18.1 |
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| Sint Maarten (Dutch part) | ||||||
| Slovak Republic | 28.9 | 29.1 | 28.6 |
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| Slovenia | 36.9 | 38.0 | 37.1 | 36.9 |
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| Solomon Islands | ||||||
| Somalia | ||||||
| South Africa | 31.7 | 30.7 | 28.4 |
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| South Sudan | ||||||
| Spain | 27.7 | 24.4 | 22.4 | 24.9 |
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| Sri Lanka | 15.8 | 14.9 |
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| St. Kitts and Nevis | 29.5 | 28.6 | 29.5 | 28.9 |
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| St. Lucia | ||||||
| St. Martin (French part) | ||||||
| St. Vincent and the Grenadines | 23.4 | 25.8 | 24.7 | 25.7 |
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| Sudan | ||||||
| Suriname | ||||||
| Swaziland | ||||||
| Sweden | 36.2 | 34.8 |
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| Switzerland | 18.0 | 18.3 |
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| Syrian Arab Republic | ||||||
| Tajikistan | ||||||
| Tanzania | ||||||
| Thailand | 19.4 | 20.1 | 18.6 | 20.3 |
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| Timor-Leste | ||||||
| Togo | 16.8 | 15.6 | 17.0 | 17.6 |
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| Tonga | ||||||
| Trinidad and Tobago | 30.4 | 34.5 | 33.5 |
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| Tunisia | 27.0 | 29.2 | 28.6 | 29.0 |
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| Turkey | 25.8 | 22.5 | 21.8 | 24.4 |
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| Turkmenistan | ||||||
| Turks and Caicos Islands | ||||||
| Tuvalu | ||||||
| Uganda | 12.8 | 13.3 | 12.6 |
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| Ukraine | 34.3 | 35.8 | 34.6 |
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| United Arab Emirates | ||||||
| United Kingdom | 37.3 | 38.7 | 36.0 |
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| United States | 19.3 | 17.8 | 16.2 | 16.9 |
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| Uruguay | 26.5 | 26.5 | 30.4 | 30.9 |
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| Uzbekistan | ||||||
| Vanuatu | ||||||
| Venezuela, RB | ||||||
| Vietnam | ||||||
| Virgin Islands (U.S.) | ||||||
| West Bank and Gaza | ||||||
| Yemen, Rep. | ||||||
| Zambia | 17.4 | 18.4 | 15.6 | 17.4 |
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| Zimbabwe |