Country name 1984 1985 1986 1987 1988
Germany 16 16 16 16 16
Luxembourg 17 17 17 17 17
Switzerland 18 18 18 17 17
Denmark 19 18 18 18 17
Italy 20 19 19 18 18
Austria 19 18 18 18 18
Sweden 18 18 18 18 18
Belgium 19 19 18 18 18
Netherlands 20 20 19 19 19
United Kingdom 19 19 19 19 19
Norway 20 20 20 19 19
Finland 20 19 19 19 19
Japan 22 22 21 20 20
Greece 22 21 21 21 20
France 21 21 21 21 20
Croatia 21 21 21 21 21
Canada 21 21 21 21 21
Bulgaria 22 22 21 21 21
Hungary 22 22 21 21 21
Spain 24 23 23 22 21
Latvia 21 21 21 21 21
Slovenia 23 22 22 22 22
United States 22 22 22 22 22
Ukraine 22 22 22 22 22
Portugal 24 24 23 22 22
Hong Kong SAR, China 24 23 23 23 22
Singapore 25 24 24 23 22
Estonia 22 22 22 22 22
Czech Republic 24 23 23 23 22
Australia 24 24 23 23 23
Lithuania 23 23 23 23 23
Russian Federation 22 23 23 23 23
Belarus 23 23 23 23 23
New Zealand 25 25 24 24 24
Romania 25 25 24 24 24
Cuba 27 26 26 25 24
Aruba 25 25 24 25 25
Bosnia and Herzegovina 26 25 25 25 25
Georgia 25 25 25 25 25
Barbados 27 27 26 25 25
Malta 24 25 25 25 25
Macao SAR, China 25 25 25 25 25
Iceland 26 26 26 26 25
Cyprus 25 25 25 25 25
Poland 25 26 26 26 25
Slovak Republic 27 27 26 26 26
Montenegro 27 26 26 26 26
Uruguay 27 27 27 27 26
Macedonia, FYR 28 28 27 27 27
Curacao 28 28 27 27 27
Korea, Rep. 31 30 29 28 27
Moldova 27 27 27 28 28
Korea, Dem. Rep. 32 31 30 29 28
Ireland 30 29 29 28 28
Puerto Rico 30 30 29 29 28
Qatar 29 29 29 29 29
Antigua and Barbuda 30 30 29 29 29
China 32 31 30 30 30
Mauritius 33 32 31 31 30
Chile 31 31 31 30 30
Armenia 30 30 30 30 30
Guam 33 32 32 31 30
Virgin Islands (U.S.) 34 34 33 32 31
Argentina 31 31 31 31 31
Kazakhstan 32 32 32 32 32
Thailand 36 35 34 33 32
United Arab Emirates 31 32 32 32 32
Israel 33 33 33 32 32
Sri Lanka 35 34 34 33 33
New Caledonia 35 35 35 34 33
Bahrain 34 34 33 33 33
Bahamas, The 35 35 34 34 33
Azerbaijan 33 33 33 33 34
Suriname 36 36 35 35 34
Trinidad and Tobago 34 34 34 34 34
Seychelles 35 34 34 34 35
Albania 37 36 36 35 35
Lebanon 37 37 36 36 35
Brunei Darussalam 38 38 37 36 36
French Polynesia 37 36 36 36 36
Equatorial Guinea 35 35 35 35 36
Guyana 39 39 38 37 36
Costa Rica 36 36 36 36 36
Jamaica 38 37 37 36 36
Kuwait 37 37 36 36 36
Brazil 37 37 37 36 36
Panama 39 38 38 37 37
Colombia 39 38 38 37 37
Turkey 39 39 38 38 37
Kyrgyz Republic 37 37 37 37 37
Indonesia 39 39 39 38 37
Malaysia 38 38 38 38 38
India 39 38 38 38 38
St. Lucia 41 41 40 39 38
Vietnam 39 39 39 38 38
Venezuela, RB 39 39 39 39 38
Grenada 38 38 38 38 39
Myanmar 40 40 40 39 39
St. Vincent and the Grenadines 40 40 39 39 39
Fiji 39 39 39 39 39
Ecuador 40 40 40 39 39
Peru 40 40 40 39 39
Tunisia 40 40 40 39 39
Dominican Republic 41 40 40 40 39
Kiribati 39 39 39 39 40
Egypt, Arab Rep. 40 40 40 40 40
South Africa 41 40 40 40 40
Timor-Leste 40 40 40 40 40
Tonga 41 41 41 40 40
Mexico 43 42 41 41 40
Turkmenistan 41 41 40 40 41
Uzbekistan 41 41 41 41 41
Samoa 43 43 42 42 41
Mongolia 42 42 42 41 41
Gabon 40 41 41 41 41
Philippines 42 42 42 41 41
Bolivia 42 42 42 42 41
Morocco 43 43 42 42 41
Paraguay 42 42 42 42 42
Nepal 42 42 42 42 42
Saudi Arabia 43 43 43 43 43
El Salvador 44 44 44 43 43
Bangladesh 44 44 43 43 43
Haiti 42 42 42 43 43
Central African Republic 42 42 43 43 43
Libya 45 44 44 43 43
Tajikistan 43 43 43 43 43
Papua New Guinea 45 45 44 44 43
Cambodia 42 42 43 43 43
Pakistan 43 43 43 43 43
Guinea 43 43 43 43 44
Bhutan 44 44 44 44 44
Belize 45 45 44 44 44
Congo, Rep. 45 44 44 44 44
Vanuatu 44 44 44 44 44
South Sudan 44 44 44 44 44
Lao PDR 44 44 44 44 44
Ghana 45 45 45 44 44
Lesotho 45 45 45 44 44
Somalia 44 44 44 44 45
Micronesia, Fed. Sts. 46 46 45 45 45
Mauritania 45 45 45 45 45
Algeria 46 46 45 45 45
Sierra Leone 45 45 45 45 45
Cote d'Ivoire 45 45 45 45 45
Namibia 47 47 46 46 45
Djibouti 45 45 45 45 45
Nigeria 45 45 45 45 45
Cabo Verde 45 45 45 45 45
Congo, Dem. Rep. 45 45 45 45 45
Guinea-Bissau 46 47 46 46 45
Liberia 45 45 45 45 45
Madagascar 46 46 45 45 45
Comoros 46 46 46 46 46
Guatemala 46 46 46 46 46
Botswana 46 46 46 46 46
Iran, Islamic Rep. 45 45 46 46 46
Honduras 46 46 46 46 46
Mali 44 45 45 45 46
Sudan 47 47 46 46 46
Benin 45 46 46 46 46
Oman 45 46 46 46 46
Eritrea 46 46 46 46 46
Iraq 46 46 46 46 46
Cameroon 46 46 46 46 46
Zambia 47 47 46 46 46
Mozambique 44 45 45 46 46
Tanzania 46 46 46 46 46
Gambia, The 46 46 46 46 46
Ethiopia 46 46 46 46 46
Maldives 45 45 46 46 46
Togo 47 47 47 46 46
Solomon Islands 48 48 47 47 46
Malawi 48 47 47 47 47
Nicaragua 47 47 47 47 47
Zimbabwe 48 48 48 47 47
Burundi 45 46 46 47 47
Burkina Faso 46 47 47 47 47
Chad 46 46 47 47 47
Jordan 47 47 47 47 47
Angola 47 47 47 47 47
Senegal 47 47 47 47 47
Syrian Arab Republic 49 48 48 48 48
Sao Tome and Principe 47 47 47 48 48
Uganda 48 48 48 48 48
Niger 48 48 48 48 48
Swaziland 49 49 49 49 48
Afghanistan 48 48 48 48 49
Kenya 50 50 50 50 50
Rwanda 49 50 50 50 50
Yemen, Rep. 50 51 51 52 52
Marshall Islands
St. Martin (French part)
Dominica
San Marino
Andorra
Isle of Man
Kosovo
Greenland
Liechtenstein
Bermuda
Faeroe Islands
Turks and Caicos Islands
American Samoa
Tuvalu
Northern Mariana Islands
Serbia
St. Kitts and Nevis
Sint Maarten (Dutch part)
West Bank and Gaza
Cayman Islands
Monaco
Palau

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