Country name 2010 2011 2012
Liechtenstein 3 0 0
Singapore 0 0 0
Iceland 1 1 0
Kuwait 0
Hong Kong SAR, China 1 0 0
Indonesia 0 1 1
San Marino 1
Slovenia 1 1 1
Sweden 1 1 1
Spain 1 1 1
Saudi Arabia 1
Denmark 1 1 1
Italy 1 1 1
New Zealand 1 1 1
Austria 1 1 1
Netherlands 1 1 1
Tonga 1 2 1
Czech Republic 1 1 1
France 1 1 1
Qatar 1
Australia 1 1 1
Ireland 1 1 1
Croatia 1 1 1
Portugal 1 1 1
Serbia 1 1 1
Hungary 1 1 1
Slovak Republic 2 2 1
Belgium 2 2 2
Finland 2 2 2
Canada 1 2 2
Libya 2
Romania 2 2 2
Israel 2 2 2
Malawi 4 2 2
Armenia 2 2 2
Sierra Leone 3 3 2
Bulgaria 2 2 2
Cyprus 1 1 2
Brunei Darussalam 2
Tunisia 2
Morocco 1 1 2
Malaysia 2
United Arab Emirates 3
Montenegro 2 3 3
Bangladesh 3 3
Senegal 3
Malta 1 1 3
Vanuatu 3
Chile 3 4 3
Palau 3
Liberia 3 4 3
Vietnam 3
India 4 4 4
Samoa 4
Uzbekistan 4
Maldives 4
Fiji 4
Iran, Islamic Rep. 4
Cuba 4
Tuvalu 4
Solomon Islands 4
Micronesia, Fed. Sts. 5
Niger 5
United States 5 5 5
Marshall Islands 5
Latvia 3 3 5
Mauritania 5
Albania 4 5 5
Korea, Dem. Rep. 5
Lao PDR 6
Ghana 6
Suriname 6
Kenya 6 6 6
Cambodia 7
Afghanistan 4 4 7
Moldova 8 9 7
Lithuania 7 7 7
Eritrea 7
Chad 7
Barbados 11 10 7
West Bank and Gaza 7
Mali 8
Cameroon 8
Pakistan 8 8 8
Bermuda 11 12 8
Kazakhstan 9 9 8
Uruguay 6 6 8
Burkina Faso 8
Burundi 8
Iraq 8
Somalia 8
Kiribati 8
Benin 8
Guinea-Bissau 8
Costa Rica 11 10 9
Philippines 10 9 9
Guinea 9
Gabon 9
Russian Federation 10 10 9
Seychelles 10
Peru 9 10 10
Paraguay 11 10 10
Comoros 10
Angola 10
Djibouti 10
Gambia, The 10
Haiti 7 9 10
Cabo Verde 11 15 10
Togo 10
Zimbabwe 11
Zambia 11
Madagascar 11
Sudan 11
Antigua and Barbuda 7 11
Nicaragua 14 13 11
Central African Republic 12
Ethiopia 12
Bolivia 10 10 12
Ecuador 18 15 12
Mozambique 12
Congo, Rep. 13
Tanzania 13
Turkmenistan 13
Grenada 10 4 13
Cote d'Ivoire 14
South Sudan 14
Myanmar 15
Guyana 18 16 17
Namibia 14 14 17
Panama 21 20 17
Botswana 18
Equatorial Guinea 19
Nigeria 20
Mexico 22 23 22
St. Lucia 25 22
Dominican Republic 25 25 22
Rwanda 23
Brazil 22 23 25
St. Vincent and the Grenadines 23 19 26
Puerto Rico 27 27
Trinidad and Tobago 36 26 28
Congo, Dem. Rep. 28
Bahamas, The 26 35 30
Colombia 32 34 31
South Africa 31 30 31
St. Kitts and Nevis 40 64 34
Swaziland 34
Jamaica 53 41 39
Guatemala 42 39 40
El Salvador 64 70 41
Belize 42 39 45
Venezuela, RB 45 48 54
Honduras 82 91 90
Switzerland 1 1
Japan 0 0
Andorra 1
Jordan 2 2
China 1
Oman 1
Virgin Islands (U.S.) 53
Norway 1 2
Thailand 6 5
Bosnia and Herzegovina 2 1
Turks and Caicos Islands
Northern Mariana Islands
Algeria 1 1
Sao Tome and Principe 3 3
Papua New Guinea 10
Bhutan 2
Tajikistan 2 2
Egypt, Arab Rep. 2 3
Mauritius 3 3
Macedonia, FYR 2 1
Turkey 3 3
Korea, Rep. 1
Uganda 9 11
Isle of Man
American Samoa
Belarus 5
Poland 1 1
Sint Maarten (Dutch part)
Yemen, Rep. 5
Estonia 5 5
Aruba 4
Bahrain 1 1
Syrian Arab Republic 2
Faeroe Islands
Curacao
Kyrgyz Republic 20 9
Timor-Leste 4
New Caledonia
Argentina 6
Middle East (developing only)
Guam 2 3
Azerbaijan 2
Luxembourg 2 1
Sri Lanka 4 3
Macao SAR, China 1
Nepal 3 3
Ukraine 4
Cayman Islands
United Kingdom 1 1
St. Martin (French part)
Greenland
Mongolia 9 10
Greece 2 2
Dominica 21
Germany 1 1
Monaco
Georgia 4
Lesotho 38
French Polynesia
Lebanon 2

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