Country name 1990 1991 1992 1993 1994
China 3 3 3 3 3
India 6 6 6 6 6
Germany 6 6 6 6 6
Poland 7 7 7 7 7
Ukraine 7 7 7 7 7
Russian Federation 8 8 8 8 8
United States 9 8 8 8 8
Netherlands 9 9 9 9 9
Italy 9 9 9 9 9
Kazakhstan 12 12 12 12 12
Algeria 13 13 13 12 12
Brazil 13 13 13 13 13
Indonesia 15 14 14 13 12
South Sudan 14 14 13 14 14
Slovak Republic 15 15 15 15 14
Sweden 15 15 15 15 15
Spain 15 15 15 15 16
Venezuela, RB 17 16 16 15 15
Czech Republic 16 16 16 16 16
Romania 17 17 17 17 17
Nigeria 17 17 17 17 17
Belgium 18 18 18 18 17
United Kingdom 18 18 18 18 18
Canada 18 18 18 18 18
Iran, Islamic Rep. 20 20 19 19 19
Sri Lanka 19 19 19 19 19
West Bank and Gaza 20 20 20 19 19
Cameroon 20 20 20 20 20
Switzerland 20 20 20 20 20
Saudi Arabia 19 19 20 20 21
South Africa 20 20 20 21 21
Bulgaria 21 21 21 21 21
Turkey 20 21 21 21 21
Pakistan 21 21 21 21 21
Colombia 21 21 21 21 21
France 22 22 21 21 21
Ghana 22 22 22 22 21
Korea, Dem. Rep. 21 22 22 22 22
Morocco 22 22 22 22 22
Mozambique 23 23 22 22 21
Norway 22 22 22 23 23
Finland 22 22 22 23 23
Lithuania 23 23 23 23 23
Vietnam 23 23 23 23 23
Denmark 24 24 24 24 24
Nepal 25 25 24 24 23
Belarus 24 24 24 24 24
Uzbekistan 25 25 25 25 24
Australia 25 25 25 25 25
Mexico 25 25 25 25 25
Turkmenistan 25 25 25 25 25
Malaysia 23 24 24 25 25
Zambia 25 25 26 26 27
Bosnia and Herzegovina 23 24 25 27 28
Syrian Arab Republic 28 27 27 27 26
Cuba 27 27 27 27 27
Libya 27 27 27 27 27
Philippines 26 27 27 27 28
Benin 29 29 28 27 27
Bahrain 29 28 28 27 27
Bolivia 28 28 27 28 28
Croatia 27 29 29 28 28
Ecuador 28 28 28 28 28
Honduras 29 28 28 28 28
Myanmar 28 28 28 28 28
Yemen, Rep. 26 27 28 28 29
Ethiopia 30 29 29 28 28
Hungary 29 29 29 29 28
Serbia 30 29 29 29 28
Austria 30 30 30 30 30
Tanzania 31 30 30 30 30
New Zealand 31 30 30 31 31
Korea, Rep. 33 33 32 31 30
Jordan 37 33 32 31 30
Tunisia 31 31 31 32 31
Bangladesh 31 32 32 32 32
Papua New Guinea 31 32 32 33 33
Iraq 34 33 33 33 33
Oman 30 31 32 34 34
Malawi 34 33 33 34 34
Japan 34 34 34 34 34
United Arab Emirates 33 33 34 34 35
Tajikistan 35 35 35 34 34
Madagascar 35 35 35 34 34
Nicaragua 34 34 34 34 35
Congo, Dem. Rep. 34 35 35 35 35
Thailand 35 35 35 35 34
Zimbabwe 35 35 35 35 34
Kenya 35 35 35 35 35
Namibia 36 35 35 36 36
El Salvador 37 37 37 36 35
Argentina 37 37 37 37 37
Moldova 38 38 37 37 37
Dominican Republic 38 38 37 37 37
Niger 37 37 37 38 38
Uganda 39 38 38 38 38
Macedonia, FYR 38 38 38 38 38
Chad 39 38 38 38 38
Guatemala 40 39 39 38 38
Peru 39 39 39 39 39
Mali 40 40 40 40 40
Sudan 41 41 41 40 40
Kyrgyz Republic 38 39 39 40 42
Lao PDR 43 42 42 41 40
Greece 42 42 41 41 41
Cambodia 44 43 42 41 43
Chile 42 42 42 42 42
Togo 44 43 43 42 42
Estonia 43 42 42 43 43
Sierra Leone 40 40 41 43 44
Central African Republic 44 43 43 43 43
Egypt, Arab Rep. 40 41 42 43 45
Cote d'Ivoire 44 44 44 43 43
Burkina Faso 44 44 44 44 44
Azerbaijan 45 45 45 44 44
Georgia 46 46 45 44 45
Ireland 46 45 45 45 45
Jamaica 48 47 47 46 46
Costa Rica 48 48 47 47 46
Mauritania 50 49 48 47 46
Guinea 53 51 49 48 46
Israel 49 47 47 48 48
Senegal 48 48 48 48 49
Mongolia 46 47 47 48 50
Latvia 49 49 49 49 49
Lebanon 58 52 51 51 50
Armenia 49 50 50 51 53
Portugal 53 53 52 52 51
Paraguay 53 52 52 52 52
Qatar 53 53 53 53 54
Angola 53 53 53 54 54
Congo, Rep. 54 54 54 54 54
Uruguay 56 56 55 55 55
Haiti 56 55 55 55 56
Gabon 56 56 56 56 55
Somalia 55 58 58 58 58
Afghanistan 72 69 65 61 58
Rwanda 56 60 61 61 61
Guinea-Bissau 64 63 62 62 61
Panama 63 63 63 63 63
Burundi 67 65 64 63 63
Gambia, The 65 65 65 65 64
Eritrea 69 68 68 68 67
Puerto Rico 71 71 71 71 70
Liberia 89 100 85 72 59
Djibouti 71 73 73 73 73
Singapore 99 99 99 99 99
Hong Kong SAR, China 100 100 100 100 100
Macao SAR, China 100 100 100 100 100
Maldives
Guyana
Turks and Caicos Islands
Isle of Man
Cabo Verde
Kiribati
Antigua and Barbuda
Northern Mariana Islands
Curacao
Kuwait 69 71
Trinidad and Tobago
Guam
Iceland
Grenada
St. Martin (French part)
Middle East (developing only)
Swaziland
Samoa
Comoros
San Marino
Marshall Islands
Sao Tome and Principe
Botswana
Greenland
Bermuda
Lesotho
Mauritius
New Caledonia
Palau
Seychelles
St. Vincent and the Grenadines
French Polynesia
Suriname
Virgin Islands (U.S.)
Cyprus
American Samoa
Malta
Liechtenstein
Cayman Islands
Micronesia, Fed. Sts.
Timor-Leste
Solomon Islands
Tonga
Luxembourg
Brunei Darussalam
Faeroe Islands
Bhutan
Barbados
Tuvalu
Aruba
Belize
Equatorial Guinea
Bahamas, The
Dominica
Montenegro
St. Kitts and Nevis
Vanuatu
St. Lucia
Monaco
Sint Maarten (Dutch part)
Andorra
Fiji
Albania
Slovenia

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