Nigeria 1,454,578
United States 261,527
European Union 165,049
South Africa 143,329
United Kingdom 81,323
Viet Nam 32,390
Germany 23,574
Canada 18,455
Italy 13,722
Ireland 13,623
France 10,154
Philippines 9,324
China 8,837
United Arab Emirates 8,675
Ghana 8,209
Romania 7,391
Sweden 6,791
India 6,649
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 3,149
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
Estonia 1,919
Côte d'Ivoire 1,903
Switzerland 1,836
Congo, The Democratic Republic of the 1,703
Egypt 1,653
Kenya 1,613
Liberia 1,575
Hungary 1,563
Singapore 1,546
Togo 1,471
Korea, Republic of 1,204
Senegal 1,181
Zambia 1,019
Ukraine 1,011
Mozambique 1,009
Czech Republic 894
Israel 892
Mali 866
Portugal 770
Uganda 693
Haiti 691
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
Dominican Republic 331
Taiwan, Province of China 327
Angola 326
Guinea 301
Colombia 301
Panama 298
Oman 285
Sri Lanka 284
Ethiopia 257
Jamaica 245
Chile 241
Tunisia 231
Tanzania, United Republic of 222
Iceland 212
Malawi 208
Malta 200
Botswana 195
Luxembourg 181
Rwanda 173
Cyprus 170
Iran, Islamic Republic of 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
Iraq 125
Congo 124
Lithuania 124
Sudan 118
Somalia 117
Jordan 115
Georgia 112
Mauritius 111
Mauritania 110
Lebanon 107
Zimbabwe 106
Puerto Rico 98
Fiji 97
Kazakhstan 96
Venezuela, Bolivarian Republic of 92
Lesotho 88
Chad 82
Sao Tome and Principe 77
Latvia 75
Cape Verde 75
Equatorial Guinea 70
Costa Rica 64
Swaziland 63
Madagascar 61
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
Saint Kitts and Nevis 37
Brunei Darussalam 37
Dominica 37
Suriname 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 20
Honduras 20
Nicaragua 18
Saint Vincent and the Grenadines 18
Syrian Arab Republic 18
Samoa 18
Saint Lucia 16
Kiribati 16
Bahamas 16
Maldives 16
Comoros 15
Central African Republic 15
Kyrgyzstan 15
Papua New Guinea 15
Tonga 15
Cayman Islands 14
Marshall Islands 13
Afghanistan 13
Jersey 11
Solomon Islands 11
Guam 11
Isle of Man 10
Bhutan 10
French Polynesia 9
Réunion 7
Virgin Islands, U.S. 7
Vanuatu 6
New Caledonia 6
Monaco 6
Micronesia, Federated States of 6
Cuba 6
Uzbekistan 6
Guadeloupe 6
Aruba 5
Martinique 5
Timor-Leste 4
Turks and Caicos Islands 4
Faroe Islands 4
Gibraltar 4
Bermuda 3
United States Minor Outlying Islands 3
Montenegro 3
Tajikistan 3
American Samoa 3
Northern Mariana Islands 2
Cook Islands 2
Netherlands Antilles 2
Djibouti 2
Korea, Democratic People's Republic of 1
French Guiana 1
Anguilla 1
Åland Islands 1
Greenland 1
Holy See (Vatican City State) 1