Country name 2010 2011 2012 2013
Luxembourg 0 0 0
Ireland 0 0 0
Estonia 2 0 0
Sudan 1 0 0
Slovenia 0 0 0
Slovak Republic 0 0 0
Guinea 1 0 1
Malta 1 1 1
Belgium 1 1 1
Greece 1 1 1
Panama 1 1 1
Netherlands 1 1 1
Malawi 1 1 1
Cyprus 1 1 1
Finland 1 1 1
Spain 1 1 1
United Kingdom 1 1 1
Austria 1 1 1
Congo, Dem. Rep. 1 1 2
Aruba 4 1 3
Canada 1 1 1
Ecuador 1 1 1
Australia 1 1 1
Vietnam 2 1 2
Tajikistan 1 1 1
Montenegro 2 1 2
Germany 2 2 2
Maldives 2 2 1
Liberia 3 2
Belarus 2 2 2
Sierra Leone 4 2 2
France 2 2 2
United States 2 2 2
Portugal 2 2 3
Sweden 2 2 2
Swaziland 3 2 3
Kosovo 3 2 4
Bahrain 4 2 3
Dominican Republic 3 3 2
Antigua and Barbuda 2 3 3
Seychelles 3 3 3
St. Vincent and the Grenadines 3 3 3
Belize 3 3 3
El Salvador 4 3 3
Italy 3 3 3
Lithuania 3 3 3
Bangladesh 4 3 4
Cabo Verde 4 3 4
Bahamas, The 3 3 2
Czech Republic 4 3 3
Timor-Leste 4 3 6
St. Lucia 3 3 3
Namibia 3 3
Kenya 4 3 4
Honduras 4 3 3
Qatar 3 5
Jamaica 4 3 3
Zambia 4 3 4
Nicaragua 4 3 3
Egypt, Arab Rep. 7 3 2
Tunisia 4 3 4
Senegal 4 3
New Zealand 4 3 3
Grenada 3 3 3
Ghana 4 3 3
Norway 4 3 4
Haiti 4 3 4
Sri Lanka 5 3 4
Mongolia 6 3 5
Dominica 3 4 4
Tanzania 5 4 4
Lesotho 5 4 4
Georgia 4 4 3
Ukraine 5 4 3
Guatemala 4 4 4
Fiji 4 4 4
Mali 4 4
Kyrgyz Republic 5 4 4
Mauritius 3 4 4
Suriname 5 4 5
Costa Rica 4 4 5
Mozambique 5 4 3
Moldova 5 4 5
Nigeria 5 4 6
Turkey 5 4 5
Uganda 5 4 5
Latvia 7 4 5
Yemen, Rep. 6 4
Pakistan 5 4 3 2
Sao Tome and Principe 5 4 4
Armenia 5 4 4
Albania 5 4 5
Guyana 5 4 4
Djibouti 6 4 4
South Africa 5 4 4
Poland 5 4 5
Kazakhstan 5 4 4
Paraguay 4 4 4
Macedonia, FYR 5 4 5
Mexico 4 4 5
Hungary 4 4 4
Benin 6 4
Cameroon 7 4 5
Vanuatu 5 4
Burundi 6 4 4
Samoa 7 5 4
Chile 4 5 5
Venezuela, RB 6 5 4
Colombia 6 5 5
Bosnia and Herzegovina 6 5 5
Lao PDR 5 5 4
Morocco 7 5 4
Hong Kong SAR, China 6 5 5
Oman 6 5 4
Argentina 8 5 5
Bulgaria 7 5 6
Singapore 6 5 6
Rwanda 6 6 4
Cambodia 7 6 6
Denmark 6 6 6
Azerbaijan 5 6 6
Korea, Rep. 7 6 6
Croatia 6 6 6
Indonesia 7 6 6
Tonga 5 6 7
India 8 6 6
Solomon Islands 5 6 8
Angola 5 6 7
Jordan 8 7 4
Malaysia 6 7 7
Bhutan 12 7 9 9
Papua New Guinea 5 7 5
Gambia, The 7 7 6
Trinidad and Tobago 14 7
Romania 9 7 7
St. Kitts and Nevis 5 8 8
Serbia 8 8 7
Thailand 9 8 7
Nepal 7 8 10
Uruguay 8 8 10
Switzerland 9 8 14
Myanmar 11 9
Israel 10 9 8
Kuwait 8 9 9
Afghanistan 9 9 7
Iceland 8 10 5
Peru 11 10 12
Botswana 14 11 10
Russian Federation 14 12 12
Brazil 12 12 13
Philippines 11 12 12
Iraq 13 14 13
Bolivia 16 15 15
Japan 16 15 14
Macao SAR, China 16 16 7
Lebanon 17 17 19
China 22 19 19
Saudi Arabia 30 32 35
Algeria 37 35 34
Libya 39 79 41
Northern Mariana Islands
West Bank and Gaza
San Marino
Cayman Islands
New Caledonia
Niger 3
Monaco
Tuvalu
Micronesia, Fed. Sts.
Bermuda
Mauritania
Puerto Rico
Marshall Islands
Congo, Rep.
Sint Maarten (Dutch part)
Turkmenistan
Madagascar
Central African Republic
Liechtenstein
Brunei Darussalam
Eritrea
Andorra
Curacao
Palau
Togo 4
Syrian Arab Republic 12
Somalia
Equatorial Guinea
Korea, Dem. Rep.
Cuba
South Sudan
Cote d'Ivoire 4
Kiribati
Comoros
Isle of Man
Iran, Islamic Rep.
Turks and Caicos Islands
Guinea-Bissau 6
Chad
St. Martin (French part)
United Arab Emirates
Guam
Burkina Faso 5
Greenland
Uzbekistan
Gabon
Barbados 4
French Polynesia
Virgin Islands (U.S.)
Faeroe Islands
American Samoa
Ethiopia
Zimbabwe

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