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

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