Nigeria 1,455,260
United States 261,539
European Union 165,051
South Africa 143,337
United Kingdom 81,323
Viet Nam 32,390
Germany 23,574
Canada 18,455
Italy 13,722
Ireland 13,626
France 10,154
Philippines 9,324
China 8,837
United Arab Emirates 8,675
Ghana 8,210
Romania 7,391
Sweden 6,791
India 6,652
Mexico 5,459
Spain 5,295
Norway 5,060
Netherlands 4,737
Thailand 4,405
Argentina 4,301
Turkey 4,242
Poland 3,798
Malaysia 3,376
Brazil 3,366
Australia 3,192
Cameroon 3,159
Indonesia 3,021
Greece 3,016
Benin 3,013
Austria 2,794
Belgium 2,631
Russian Federation 2,586
Serbia 2,410
Japan 2,364
Finland 2,211
Saudi Arabia 2,158
Qatar 2,046
Côte d'Ivoire 1,955
Estonia 1,919
Switzerland 1,836
Congo, The Democratic Republic of the 1,704
Egypt 1,653
Kenya 1,613
Liberia 1,575
Hungary 1,563
Singapore 1,546
Togo 1,471
Korea, Republic of 1,204
Senegal 1,184
Zambia 1,023
Mozambique 1,015
Ukraine 1,011
Mali 904
Czech Republic 894
Israel 892
Portugal 770
Haiti 693
Uganda 693
Niger 665
New Zealand 649
Cambodia 646
Burkina Faso 643
Sierra Leone 614
Pakistan 611
Gabon 562
Gambia 546
Kuwait 524
Denmark 501
Libyan Arab Jamahiriya 489
Namibia 487
Hong Kong 479
Bulgaria 381
Bangladesh 367
Morocco 353
Croatia 340
Angola 331
Dominican Republic 331
Taiwan, Province of China 327
Guinea 311
Colombia 301
Panama 298
Oman 285
Sri Lanka 284
Ethiopia 257
Jamaica 245
Chile 241
Tunisia 231
Tanzania, United Republic of 223
Iceland 212
Malawi 210
Malta 200
Botswana 195
Luxembourg 181
Rwanda 173
Iran, Islamic Republic of 171
Cyprus 170
Algeria 159
Slovenia 154
Myanmar 150
Ecuador 146
Albania 144
Trinidad and Tobago 144
Slovakia 135
Lao People's Democratic Republic 134
Peru 126
Congo 126
Iraq 125
Lithuania 124
Sudan 118
Somalia 117
Jordan 115
Georgia 112
Mauritius 111
Mauritania 110
Lebanon 107
Zimbabwe 106
Puerto Rico 98
Kazakhstan 97
Fiji 97
Venezuela, Bolivarian Republic of 92
Lesotho 88
Chad 82
Sao Tome and Principe 77
Cape Verde 75
Latvia 75
Equatorial Guinea 70
Costa Rica 64
Swaziland 63
Madagascar 62
Guatemala 61
Moldova, Republic of 60
Bolivia, Plurinational State of 60
Antigua and Barbuda 58
Macedonia, The Former Yugoslav Republic of 57
Macao 57
Belarus 56
Seychelles 55
Grenada 55
Azerbaijan 54
Bosnia and Herzegovina 52
Bahrain 51
Nepal 49
Guyana 47
Guinea-Bissau 42
Mongolia 39
Suriname 37
Saint Kitts and Nevis 37
Brunei Darussalam 37
Dominica 37
Virgin Islands, British 35
Uruguay 34
Barbados 32
El Salvador 30
Palestinian Territory, Occupied 28
Belize 27
Burundi 26
Armenia 24
Paraguay 23
Yemen 21
Honduras 20
Samoa 18
Nicaragua 18
Syrian Arab Republic 18
Saint Vincent and the Grenadines 18
Kiribati 16
Bahamas 16
Maldives 16
Saint Lucia 16
Papua New Guinea 15
Comoros 15
Central African Republic 15
Tonga 15
Kyrgyzstan 15
Cayman Islands 14
Marshall Islands 13
Afghanistan 13
Solomon Islands 11
Guam 11
Jersey 11
Isle of Man 10
Bhutan 10
French Polynesia 9
Virgin Islands, U.S. 7
Réunion 7
Cuba 6
Uzbekistan 6
Vanuatu 6
Micronesia, Federated States of 6
Monaco 6
Guadeloupe 6
New Caledonia 6
Aruba 5
Martinique 5
Timor-Leste 4
Gibraltar 4
Turks and Caicos Islands 4
Faroe Islands 4
Bermuda 3
American Samoa 3
Tajikistan 3
Montenegro 3
United States Minor Outlying Islands 3
Northern Mariana Islands 2
Cook Islands 2
Netherlands Antilles 2
Djibouti 2
Korea, Democratic People's Republic of 1
Anguilla 1
Åland Islands 1
French Guiana 1
Greenland 1
Holy See (Vatican City State) 1