Country name 1990 1991 1992 1993 1994
Norway 0 0 0 0
Malaysia 0
United Kingdom 0
Japan 0 0 0 0
Papua New Guinea 0 0 0
Seychelles 0 0 0 0
Tuvalu 0 0 0 0
Sweden 0 0 0
St. Lucia 0 0 0
Denmark 0 0 0 0
Korea, Rep. 0 0 0 0
Cyprus 0 0 0 0 0
Finland 1 0 1 1 1
Kiribati 1 1 0 1 0
Malta 1 1 2 2 2
Switzerland 2 2 2 2 2
Ghana 3 3
Trinidad and Tobago 3 3 4
New Zealand 3 4 4
Tanzania 4 4 3 3 3
Jamaica 4 4 4
United Arab Emirates 5 5 5 4 6
Botswana 5 5 4 3 3
Jordan 5 5 5 4 2
Bahrain 5 4 5 5
Bolivia 3 6 9 4 4
Monaco 6 6
Turkey 7 7 7 6 5
Bulgaria 5 7 6 7 6
Qatar 8 7 6 5 4
Mauritius 5 8 8 8 7
Syrian Arab Republic 8 8 8 8 8
Tonga 4 8 8
Sri Lanka 9 9 8
Paraguay 10 10 10 9 9
El Salvador 10 9 10
Iran, Islamic Rep. 12 11 11 8 8
Honduras 11 10 13 13
Algeria 8 11 10 11 11
Costa Rica 12 11 9 10
Morocco 15 12 14 14 14
Colombia 15 12 17 8 10
Uruguay 11 12 12 11 12
Venezuela, RB 13 13 13
Rwanda 11 13 15
Niger 13 14 15 18
South Africa 14
Portugal 16 16
Malawi 18 17 14 18 17
Mauritania 18 17 17 15 16
Belgium 17
Congo, Dem. Rep. 17 12 8 21
Burkina Faso 17 18 16 16 16
Swaziland 17 18 17 18 17
Guinea 17 18 18 19 21
Tunisia 22 21 20 19
Benin 25 21 23 24 25
Burundi 23 22 23 24
Mozambique 25 24 25 25 25
Cote d'Ivoire 27 24 27 27 26
Lesotho 25 25 24 22 21
Cameroon 30 30
Chad 33 32 29
Central African Republic 31 32 38
Togo 33 35 37 46
Madagascar 36 37 34 34 34
Mongolia
Sao Tome and Principe
Gabon 33
Pakistan
Gambia, The 17 15 13
St. Kitts and Nevis 0
Georgia
New Caledonia 15
Germany 2 2
Cuba
Chile
Slovak Republic 3 2 2
Greece 0
Mexico 10 8
Greenland
Myanmar
Grenada
Nigeria
Guam
Bermuda
Guatemala 17
Russian Federation 2
Ecuador 5
Andorra
Guinea-Bissau
Comoros 39
Guyana 7 5
Djibouti
Haiti
Moldova
China
Bosnia and Herzegovina
Hong Kong SAR, China
Nepal 28
Hungary 4
Nicaragua 18 16
Iceland
Antigua and Barbuda 3
India
Panama
Indonesia
Philippines
Fiji
Equatorial Guinea 25
Iraq 19
Samoa
Ireland 2 2 2
Senegal 16 16 15
Isle of Man
French Polynesia
Israel
Solomon Islands
Italy 1 1 1
Spain 4 5 3
Cayman Islands
France
Aruba
Brunei Darussalam
Canada
Micronesia, Fed. Sts.
Kazakhstan 1
Brazil
Kenya
Montenegro
Faeroe Islands
Eritrea 29 22 18
Korea, Dem. Rep.
Namibia 26 24
Armenia
Netherlands
Cambodia
Bhutan 19 20
Cabo Verde 20 18
Curacao
Turks and Caicos Islands 0
Northern Mariana Islands
Uganda
Oman 13 10 10
Ethiopia 8
Palau
Afghanistan 9
Angola
Estonia 4 4
Peru 15
Liberia
Poland
Libya
Puerto Rico
Liechtenstein
Romania 2 5
Lithuania
Croatia
Luxembourg
San Marino 0 1
Macao SAR, China 8 8 5
Saudi Arabia
Macedonia, FYR
Serbia
Singapore
Sierra Leone
St. Martin (French part)
Sint Maarten (Dutch part)
Sudan
Slovenia
Australia
Somalia
Belarus 1 1
South Sudan
Tajikistan
Belize 8
Egypt, Arab Rep.
American Samoa
Bahamas, The 0
St. Vincent and the Grenadines
Thailand
Suriname
Dominican Republic
Czech Republic 1 1
Dominica
Barbados
Marshall Islands
Bangladesh
Mali
Timor-Leste
Argentina
Congo, Rep. 39 34 34 37
Azerbaijan 0 0
Maldives
Vietnam
Turkmenistan
West Bank and Gaza
Albania
Austria
Ukraine 1 1
Zambia 3
Uzbekistan
United States
Kosovo
Kuwait 3 4
Vanuatu 14 15
Kyrgyz Republic
Lao PDR 32 29 27
Virgin Islands (U.S.)
Latvia
Yemen, Rep.
Lebanon
Zimbabwe

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