Country name 1980 1981 1982 1983
China 3 3 3 3
India 3 3 4 4
Germany 5 5 5 5
Ukraine 7 7 7 7
Poland 8 7 7 7
Russian Federation 8 8 8 8
Italy 9 9 9 9
United States 9 9 9 9
Netherlands 10 10 10 10
Nigeria 12 12 13 13
Kazakhstan 12 12 12 12
South Africa 12 12 12 12
Sweden 14 14 14 14
Brazil 15 15 15 14
Czech Republic 15 15 15 15
Spain 16 16 16 15
Malaysia 16 15 15 15
Canada 16 16 16 17
Saudi Arabia 16 16 16 16
United Kingdom 17 17 17 17
Belgium 18 18 18 18
Dominica 18 18 19 20
Tunisia 18 17 17 16
Yemen, Rep. 18 19 20 21
Romania 18 18 18 18
Indonesia 19 18 18 17
Korea, Dem. Rep. 19 19 19 20
Micronesia, Fed. Sts. 19 19 19 19
Algeria 19 18 17 17
Bulgaria 20 20 20 20
Switzerland 20 19 19 20
Finland 20 20 20 20
Cameroon 20 20 20 20
Oman 21 21 21 22
Colombia 21 21 21 21
Sri Lanka 21 21 21 21
France 21 21 21 21
Bosnia and Herzegovina 21 22 22 22
Albania 21 21 21 21
Venezuela, RB 22 21 21 20
Malawi 22 23 23 24
Bermuda 22 22 22 21
Norway 22 22 22 22
Pakistan 22 22 22 22
Turkey 23 22 22 22
Zambia 23 23 23 23
Comoros 24 23 23 24
Lithuania 24 24 24 24
Turkmenistan 24 24 24 24
Greenland 24 24 24 25
Belarus 24 24 24 24
Slovenia 24 25 25 25
San Marino 25 24 24 23
Denmark 26 25 25 25
Syrian Arab Republic 26 26 25 25
Australia 26 26 26 26
Ghana 26 25 25 25
Nepal 26 25 25 25
Morocco 26 26 25 25
Swaziland 26 25 25 25
Iran, Islamic Rep. 26 26 25 24
Bangladesh 27 27 27 28
Luxembourg 27 27 27 27
Congo, Dem. Rep. 27 28 30 31
Uzbekistan 28 28 27 27
Vietnam 28 28 28 27
Mexico 28 27 27 27
Croatia 28 28 28 28
Cuba 29 28 28 28
Guatemala 29 28 27 26
Myanmar 29 29 29 28
Papua New Guinea 29 29 29 30
Honduras 29 29 29 29
New Zealand 30 30 30 30
Hungary 30 30 30 30
Ecuador 30 30 30 30
Libya 31 30 29 28
Tanzania 31 30 30 29
United Arab Emirates 31 31 31 31
Austria 31 31 31 31
Botswana 32 31 29 28
Ethiopia 32 32 32 32
Japan 32 32 32 32
Nicaragua 32 32 32 32
Bolivia 33 33 32 31
Benin 33 33 32 32
Philippines 34 33 32 31
Somalia 34 34 35 38
Kenya 34 34 34 34
El Salvador 34 34 35 35
Mozambique 35 33 32 31
Niger 35 35 35 35
Cyprus 35 35 35 35
Iraq 35 35 34 34
Mauritius 35 35 35 35
Sudan 36 35 35 35
Madagascar 36 36 36 36
Namibia 36 36 37 37
Bahrain 36 36 35 34
Thailand 37 37 37 37
Egypt, Arab Rep. 37 37 37 38
Tajikistan 38 38 37 37
Zimbabwe 38 36 35 35
Moldova 38 38 38 38
Chad 38 38 39 39
Korea, Rep. 38 38 37 37
Kyrgyz Republic 39 38 38 38
Sierra Leone 39 39 40 40
Mali 39 39 39 39
Macedonia, FYR 39 40 40 39
Cambodia 40 55 51 46
Peru 40 40 40 39
Andorra 40 41 42 42
Argentina 40 40 40 39
Dominican Republic 40 41 42 41
Chile 41 42 42 42
Israel 41 42 42 43
Brunei Darussalam 42 41 40 38
Burkina Faso 43 43 44 44
Estonia 43 43 43 43
St. Lucia 43 42 41 40
Montenegro 44 44 43 43
Central African Republic 45 45 44 44
Cote d'Ivoire 45 45 45 45
Mauritania 46 46 47 47
Georgia 46 47 47 47
Guinea-Bissau 47 48 49 49
Afghanistan 47 50 53 56
Ireland 48 48 47 47
Mongolia 48 48 47 47
Senegal 48 48 48 48
Azerbaijan 48 48 48 47
Jordan 49 47 46 44
Liberia 49 49 50 51
Cayman Islands 49 50 51 52
Trinidad and Tobago 49 49 48 47
Virgin Islands (U.S.) 49 49 47 46
Uganda 50 48 47 46
Latvia 50 50 50 50
Armenia 51 51 51 50
Togo 51 52 52 53
Lesotho 52 52 53 53
Jamaica 52 51 50 50
Angola 52 51 51 51
Congo, Rep. 52 53 53 54
Costa Rica 52 52 52 51
Fiji 53 52 51 51
Rwanda 53 53 54 54
Cabo Verde 53 52 50 49
Greece 54 54 53 53
Equatorial Guinea 54 53 50 47
Djibouti 54 56 59 62
Paraguay 58 57 56 56
Aruba 58 58 58 58
Puerto Rico 58 58 58 59
Uruguay 58 58 58 58
Portugal 59 59 58 57
Isle of Man 59 59 60 60
Haiti 60 59 59 59
Iceland 60 60 61 61
Panama 61 61 61 62
Guinea 62 61 60 59
Gabon 65 68 68 67
Marshall Islands 66 66 66 67
Guyana 67 67 67 68
Suriname 67 69 70 71
Vanuatu 68 68 69 69
Kuwait 69 68 68 67
Malta 70 69 68 67
St. Vincent and the Grenadines 70 68 67 66
Lao PDR 70 71 73 74
Gambia, The 71 71 71 70
Eritrea 73 71 70 68
Seychelles 74 73 73 72
Turks and Caicos Islands 75 70 66 61
Qatar 76 73 70 66
Solomon Islands 82 82 82 82
Lebanon 85 84 84 80
Bahamas, The 88 88 87 86
St. Kitts and Nevis 92 92 92 91
Burundi 93 90 87 85
Guam 94 94 94 94
American Samoa 94 94 94 94
French Polynesia 95 95 95 94
Timor-Leste 96 96 94 91
Palau 97 97 97 97
Liechtenstein 97 98 98 99
Monaco 97 97 97 96
Sao Tome and Principe 98 97 95 94
Northern Mariana Islands 99 99 99 99
Hong Kong SAR, China 100 99 100 100
Samoa 100 99 99 99
New Caledonia 100 100 100 100
Singapore 100 97 95 96
Tonga 100 100 100 100
Barbados 100 100 100 100
Antigua and Barbuda 100 100 100 100
Faeroe Islands 100 100 100 100
Grenada 100 100 100 100
Maldives 100 100 100 100
Macao SAR, China 100 100 100 100
Tuvalu 100 100 100 100
Kiribati 100 100 100 100
Bhutan
Serbia
Kosovo
West Bank and Gaza
Belize
St. Martin (French part)
Curacao
Slovak Republic
Sint Maarten (Dutch part)
South Sudan

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