Country name 2010 2011 2012
China 2 2 2
Mongolia 5
Serbia 5 6
Cuba 5 5 5
Australia 6
Netherlands 6
Costa Rica 7 7 7
Palau 7
Rwanda 7
Argentina 7 7
Italy 7
Qatar 8
Armenia 8
United States 8
Brazil 8 9
Tanzania 8
Myanmar 9
Swaziland 9
Bulgaria 9 9
West Bank and Gaza 9
Congo, Dem. Rep. 10
Bhutan 10
Gambia, The 10
Sierra Leone 11
Guinea-Bissau 11
Indonesia 11
Togo 11
Cambodia 11
Thailand 11
Burundi 13
Malawi 14
Central African Republic 14
Suriname 14
Burkina Faso 14
Mali 18
Chad 20
Yemen, Rep. 32
Austria 7
Mozambique 17
Chile 6
Turkmenistan 5
Canada 6
Papua New Guinea
Colombia 10
St. Vincent and the Grenadines 11
Comoros
Mauritius
Cameroon
Niger
Congo, Rep.
Romania 8
Cabo Verde
Somalia
Cote d'Ivoire
Andorra
Croatia 5
Uruguay 8
Brunei Darussalam 12
Monaco 6
Curacao
Bangladesh
Cyprus
Oman 10 10
Czech Republic 8
Poland 6
Denmark 5
San Marino 10
Djibouti
Sint Maarten (Dutch part)
Dominica 11
Sri Lanka
Dominican Republic
Sweden 5
Ecuador 9
Tonga
Egypt, Arab Rep.
Ukraine 5
El Salvador 9
Vietnam 5
Equatorial Guinea
Micronesia, Fed. Sts.
Eritrea
Montenegro 5
Estonia 5
Namibia
Ethiopia
New Zealand 6
Faeroe Islands
Northern Mariana Islands
Fiji
Bahrain 10
Finland 4
Peru 7
France 7
Puerto Rico
French Polynesia
Azerbaijan
Gabon
Saudi Arabia 9
Botswana
Aruba
Georgia 5 7
Slovenia 6
Germany 7
South Sudan
Ghana 11
St. Lucia 10
Greece 10
Antigua and Barbuda 6
Greenland
Syrian Arab Republic
Grenada 9
Timor-Leste
Guam
Tunisia 7
Guatemala
Tuvalu
Guinea
United Kingdom 7
Bosnia and Herzegovina 5
Vanuatu
Guyana
Cayman Islands
Haiti 23
Mexico 9
Honduras 10
Moldova 6
Hong Kong SAR, China
Belarus 5
Hungary 9
Morocco
Iceland 4
Barbados 12
India
Nepal 18
Bolivia
New Caledonia
Iran, Islamic Rep. 8
Nicaragua 8
Iraq 13
Nigeria 15
Ireland 5
Norway
Isle of Man
Pakistan
Israel 8
Panama 8
Bermuda
Paraguay
Jamaica 11
Philippines 16
Japan 10
Portugal 9
Jordan
Bahamas, The 12
Kazakhstan 5 6
Russian Federation 6
Kenya
Samoa
Kiribati 8
Sao Tome and Principe
Korea, Dem. Rep.
Senegal 19
Korea, Rep.
Seychelles
Kosovo
Singapore 10
Kuwait 8
Slovak Republic 8
Kyrgyz Republic 6
Solomon Islands
Benin
South Africa
Zambia
Spain 8
Afghanistan
St. Kitts and Nevis 10
Lesotho
St. Martin (French part)
Liberia
Sudan
Libya
Angola
Liechtenstein
Switzerland 7
Lithuania 5
Tajikistan
Luxembourg 7
American Samoa
Macao SAR, China
Algeria
Macedonia, FYR 6
Trinidad and Tobago 12
Madagascar
Turkey
Belize 11
Turks and Caicos Islands
Malaysia 11
Uganda 12
Maldives
United Arab Emirates
Belgium
Albania
Malta 7
Uzbekistan
Marshall Islands
Venezuela, RB 9
Mauritania 35
Virgin Islands (U.S.)
Lao PDR 15
Latvia 5
Lebanon
Zimbabwe 11

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