| Country name | 2007 | 2008 | 2009 | 2010 | ||
|---|---|---|---|---|---|---|
| Afghanistan | 24.3 | 43.5 | 38.0 | 46.1 |
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| Albania | ||||||
| Algeria | 20.9 | 23.2 | 25.5 |
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| American Samoa | ||||||
| Andorra | ||||||
| Angola | ||||||
| Antigua and Barbuda | ||||||
| Argentina | ||||||
| Armenia | 17.0 | 21.1 | 23.9 | 22.7 |
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| Aruba | ||||||
| Australia | 24.4 | 24.2 | 26.6 |
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| Austria | 38.3 | 38.4 | 39.6 |
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| Azerbaijan | 14.6 | |||||
| Bahamas, The | 15.1 | 16.3 | 18.3 | 18.2 |
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| Bahrain | 18.8 | |||||
| Bangladesh | 10.1 | 10.9 | 11.3 |
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| Barbados | 40.1 | 40.3 |
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| Belarus | 34.7 | 34.0 | 32.8 | 31.6 |
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| Belgium | 41.0 | 42.4 | 45.1 | 44.1 |
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| Belize | ||||||
| Benin | 14.9 | 15.1 | 15.0 |
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| Bermuda | ||||||
| Bhutan | 18.4 | 22.6 | 23.3 |
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| Bolivia | 21.8 | |||||
| Bosnia and Herzegovina | 37.3 | 39.1 | 41.1 | 40.6 |
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| Botswana | ||||||
| Brazil | 24.2 | 23.8 | 25.6 |
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| Brunei Darussalam | ||||||
| Bulgaria | 30.0 | 29.8 | 31.7 |
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| Burkina Faso | 13.9 | 12.6 | 13.0 | 12.1 |
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| Burundi | ||||||
| Cambodia | 8.2 | 8.6 | 11.0 | 11.3 |
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| Cameroon | ||||||
| Canada | 17.3 | 17.5 | 19.4 | 19.2 |
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| Cape Verde | 28.2 | 26.5 | 27.5 |
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| Cayman Islands | ||||||
| Central African Republic | ||||||
| Chad | ||||||
| Chile | 17.2 | 19.5 | 22.9 | 21.0 |
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| China | ||||||
| Colombia | 25.5 | 20.1 | 19.4 | 18.3 |
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| Comoros | ||||||
| Congo, Dem. Rep. | 21.4 | 20.9 | 18.8 | 13.7 |
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| Congo, Rep. | ||||||
| Costa Rica | 22.4 | 26.0 |
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| Cote d'Ivoire | 17.6 | 17.9 | 17.8 |
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| Croatia | 34.3 | 34.4 | 36.0 | 36.6 |
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| Cuba | ||||||
| Curacao | ||||||
| Cyprus | 69.6 | 70.6 | 42.7 |
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| Czech Republic | 33.8 | 34.1 | 37.4 | 36.7 |
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| Denmark | 35.8 | 36.3 | 42.2 |
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| Djibouti | ||||||
| Dominica | ||||||
| Dominican Republic | 14.5 | 16.2 | 15.6 |
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| Ecuador | ||||||
| Egypt, Arab Rep. | 29.3 | 30.3 | 30.1 | 28.9 |
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| El Salvador | 17.4 | 19.1 | 22.0 | 21.0 |
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| Equatorial Guinea | ||||||
| Eritrea | ||||||
| Estonia | 26.7 | 31.1 | 36.5 |
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| Ethiopia | ||||||
| Faeroe Islands | ||||||
| Fiji | ||||||
| Finland | 33.8 | 34.8 |
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| France | 44.6 | 45.1 | 48.1 |
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| French Polynesia | ||||||
| Gabon | ||||||
| Gambia, The | ||||||
| Georgia | 22.9 | 29.1 | 30.9 | 26.3 |
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| Germany | 29.0 | 29.0 | 32.0 |
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| Ghana | 17.9 | 20.5 | 18.0 |
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| Greece | 45.1 | 47.9 | 52.0 |
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| Greenland | ||||||
| Grenada | ||||||
| Guam | ||||||
| Guatemala | 12.5 | 11.7 | 12.4 |
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| Guinea | ||||||
| Guinea-Bissau | ||||||
| Guyana | ||||||
| Haiti | ||||||
| Honduras | 22.4 | 22.0 | 24.3 | 23.4 |
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| Hong Kong SAR, China | 16.3 | 18.9 | 19.2 |
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| Hungary | 43.7 | 45.1 | 46.2 |
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| Iceland | 29.7 | 44.3 | 38.1 | 39.7 |
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| India | 15.0 | 17.0 | 16.3 | 15.0 |
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| Indonesia | 17.2 | 18.4 | 15.8 | 14.4 |
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| Iran, Islamic Rep. | 20.6 | 22.3 | 24.7 |
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| Iraq | ||||||
| Ireland | 32.4 | 37.7 | 44.2 |
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| Isle of Man | ||||||
| Israel | 42.5 | 41.8 | 41.5 | 41.1 |
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| Italy | 38.9 | 40.0 | 43.8 |
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| Jamaica | 34.1 | 34.3 | 39.8 |
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| Japan | ||||||
| Jordan | 32.6 | 30.4 | 28.6 | 25.9 |
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| Kazakhstan | 14.1 | 14.6 | 16.9 | 16.2 |
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| Kenya | 19.5 | 21.4 | 20.9 | 22.4 |
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| Kiribati | ||||||
| Korea, Dem. Rep. | ||||||
| Korea, Rep. | 20.1 | 20.6 | 21.8 | 19.9 |
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| Kosovo | ||||||
| Kuwait | 26.7 | 43.1 | 32.6 |
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| Kyrgyz Republic | 18.1 | 16.8 | 18.8 | 22.0 |
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| Lao PDR | 10.1 | 10.7 | 11.4 | 10.8 |
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| Latvia | 26.2 | 29.5 | 35.2 | 35.6 |
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| Lebanon | 31.3 | 29.6 | 29.2 |
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| Lesotho | 46.1 | 51.1 |
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| Liberia | 0.2 | 0.3 |
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| Libya | ||||||
| Liechtenstein | ||||||
| Lithuania | 28.9 | 31.6 | 39.2 | 37.5 |
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| Luxembourg | 33.1 | 34.1 | 39.5 | 38.6 |
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| Macao SAR, China | 10.3 | 13.9 | 17.3 | 14.9 |
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| Macedonia, FYR | 29.9 | 30.3 |
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| Madagascar | 11.2 | 11.8 |
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| Malawi | ||||||
| Malaysia | 18.8 | 20.3 | 22.7 | 19.6 |
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| Maldives | 33.9 | 32.6 | 35.6 |
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| Mali | 14.9 | 13.4 | 14.7 |
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| Malta | 41.2 | 42.9 | 43.0 | 42.5 |
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| Marshall Islands | ||||||
| Mauritania | ||||||
| Mauritius | 21.7 | 22.7 |
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| Mayotte | ||||||
| Mexico | ||||||
| Micronesia, Fed. Sts. | ||||||
| Moldova | 32.4 | 32.8 | 38.0 | 35.0 |
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| Monaco | ||||||
| Mongolia | 23.2 | 25.5 | 26.5 | 26.6 |
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| Montenegro | ||||||
| Morocco | 29.1 | 30.4 | 28.0 | 30.6 |
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| Mozambique | ||||||
| Myanmar | ||||||
| Namibia | 24.1 | |||||
| Nepal | ||||||
| Netherlands | 40.0 | 40.7 | 45.5 |
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| New Caledonia | ||||||
| New Zealand | 32.1 | |||||
| Nicaragua | 19.3 | 20.3 | 20.7 | 20.0 |
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| Niger | 11.6 | |||||
| Nigeria | 6.4 | 7.2 |
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| Northern Mariana Islands | ||||||
| Norway | 31.4 | 30.6 | 36.5 | 35.7 |
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| Oman | ||||||
| Pakistan | 16.3 | 18.6 | 16.8 | 17.5 |
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| Palau | ||||||
| Panama | ||||||
| Papua New Guinea | ||||||
| Paraguay | 14.6 | 13.6 | 17.1 | 15.1 |
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| Peru | 17.0 | 16.8 | 17.6 | 16.4 |
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| Philippines | 16.6 | 16.4 | 17.8 | 16.9 |
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| Poland | 34.2 | 35.2 | 35.7 |
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| Portugal | 38.9 | 39.8 | 43.0 |
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| Puerto Rico | ||||||
| Qatar | 15.9 | 14.9 | 19.3 |
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| Romania | 26.3 | 33.8 |
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| Russian Federation | 23.0 | 21.5 | 31.1 | 28.2 |
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| Rwanda | ||||||
| Samoa | ||||||
| San Marino | 40.6 | 44.9 |
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| Sao Tome and Principe | ||||||
| Saudi Arabia | ||||||
| Senegal | ||||||
| Serbia | 38.1 | 39.2 | 40.4 | 39.8 |
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| Seychelles | 36.9 | 30.1 | 31.7 | 31.7 |
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| Sierra Leone | 16.6 | 20.3 | 22.9 |
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| Singapore | 12.4 | 14.8 | 15.1 | 13.4 |
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| Sint Maarten (Dutch part) | ||||||
| Slovak Republic | 32.0 | 32.3 | 37.7 |
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| Slovenia | 35.7 | 37.2 | 42.2 | 42.7 |
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| Solomon Islands | ||||||
| Somalia | ||||||
| South Africa | 30.4 | 30.9 | 33.2 |
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| South Sudan | ||||||
| Spain | 25.2 | 26.6 | 30.7 | 30.5 |
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| Sri Lanka | 20.0 | 19.2 |
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| St. Kitts and Nevis | 28.6 | 28.3 | 29.6 | 29.8 |
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| St. Lucia | ||||||
| St. Martin (French part) | ||||||
| St. Vincent and the Grenadines | 20.5 | 22.8 | 24.9 | 27.4 |
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| Sudan | ||||||
| Suriname | ||||||
| Swaziland | ||||||
| Sweden | ||||||
| Switzerland | 17.3 | 17.0 |
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| Syrian Arab Republic | ||||||
| Tajikistan | ||||||
| Tanzania | ||||||
| Thailand | 17.6 | 18.2 | 19.7 | 18.6 |
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| Timor-Leste | ||||||
| Togo | 17.3 | 13.8 | 15.7 | 14.5 |
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| Tonga | ||||||
| Trinidad and Tobago | 24.5 | 27.1 | 32.3 |
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| Tunisia | 26.2 | 27.3 | 27.0 | 27.0 |
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| Turkey | 24.5 | 22.8 | 27.3 | 25.4 |
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| Turkmenistan | ||||||
| Turks and Caicos Islands | ||||||
| Tuvalu | ||||||
| Uganda | 16.5 | 15.3 | 13.9 |
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| Ukraine | 35.0 | 37.3 | 40.7 |
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| United Arab Emirates | ||||||
| United Kingdom | 39.9 | 43.1 | 46.4 |
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| United States | 21.4 | 23.1 | 26.4 | 26.8 |
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| Uruguay | 26.5 | 25.6 | 30.3 | 30.3 |
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| Uzbekistan | ||||||
| Vanuatu | ||||||
| Venezuela, RB | ||||||
| Vietnam | ||||||
| Virgin Islands (U.S.) | ||||||
| West Bank and Gaza | ||||||
| Yemen, Rep. | ||||||
| Zambia | 22.7 | 20.5 | 17.5 | 17.2 |
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| Zimbabwe |