Nigeria 1,454,555
United States 261,513
European Union 165,047
South Africa 143,325
United Kingdom 81,322
Viet Nam 32,388
Germany 23,573
Canada 18,455
Italy 13,722
Ireland 13,623
France 10,153
Philippines 9,321
China 8,837
United Arab Emirates 8,673
Ghana 8,208
Romania 7,391
Sweden 6,789
India 6,643
Mexico 5,454
Spain 5,290
Norway 5,059
Netherlands 4,736
Thailand 4,403
Argentina 4,295
Turkey 4,241
Poland 3,797
Malaysia 3,376
Brazil 3,358
Australia 3,192
Cameroon 3,135
Indonesia 3,020
Greece 3,014
Benin 3,008
Austria 2,794
Belgium 2,630
Russian Federation 2,581
Serbia 2,408
Japan 2,364
Finland 2,211
Saudi Arabia 2,154
Qatar 2,044
Estonia 1,919
Côte d'Ivoire 1,892
Switzerland 1,831
Congo, The Democratic Republic of the 1,665
Egypt 1,650
Kenya 1,606
Liberia 1,575
Hungary 1,560
Singapore 1,546
Togo 1,469
Korea, Republic of 1,202
Senegal 1,155
Zambia 1,019
Ukraine 1,010
Mozambique 1,009
Israel 891
Czech Republic 891
Mali 857
Portugal 769
Uganda 693
Haiti 679
Niger 664
New Zealand 649
Cambodia 646
Burkina Faso 636
Sierra Leone 614
Pakistan 611
Gabon 562
Gambia 546
Kuwait 524
Denmark 499
Libyan Arab Jamahiriya 489
Namibia 487
Hong Kong 478
Bulgaria 381
Bangladesh 367
Morocco 353
Croatia 340
Dominican Republic 327
Taiwan, Province of China 327
Angola 325
Colombia 300
Guinea 299
Panama 294
Oman 285
Sri Lanka 282
Ethiopia 250
Jamaica 245
Chile 240
Tunisia 231
Tanzania, United Republic of 222
Iceland 212
Malawi 208
Malta 200
Botswana 195
Luxembourg 181
Rwanda 173
Iran, Islamic Republic of 170
Cyprus 170
Algeria 156
Slovenia 154
Myanmar 150
Ecuador 144
Trinidad and Tobago 144
Albania 143
Slovakia 135
Lao People's Democratic Republic 134
Congo 124
Peru 124
Iraq 123
Lithuania 119
Sudan 118
Somalia 117
Jordan 115
Georgia 111
Mauritius 110
Mauritania 110
Lebanon 107
Zimbabwe 106
Fiji 97
Kazakhstan 96
Puerto Rico 95
Venezuela, Bolivarian Republic of 90
Lesotho 88
Chad 82
Sao Tome and Principe 77
Cape Verde 75
Latvia 73
Equatorial Guinea 70
Costa Rica 64
Swaziland 63
Madagascar 61
Bolivia, Plurinational State of 60
Moldova, Republic of 59
Guatemala 58
Antigua and Barbuda 58
Macao 57
Macedonia, The Former Yugoslav Republic of 56
Seychelles 55
Grenada 55
Belarus 55
Azerbaijan 54
Bosnia and Herzegovina 51
Bahrain 50
Nepal 49
Guyana 47
Guinea-Bissau 42
Mongolia 37
Saint Kitts and Nevis 37
Brunei Darussalam 37
Suriname 37
Dominica 37
Virgin Islands, British 35
Uruguay 34
Barbados 32
El Salvador 30
Belize 27
Palestinian Territory, Occupied 26
Burundi 26
Armenia 24
Paraguay 23
Honduras 20
Yemen 20
Samoa 18
Saint Vincent and the Grenadines 18
Nicaragua 17
Syrian Arab Republic 17
Maldives 16
Bahamas 16
Saint Lucia 16
Kiribati 16
Papua New Guinea 15
Kyrgyzstan 15
Central African Republic 15
Tonga 15
Cayman Islands 14
Afghanistan 13
Marshall Islands 13
Comoros 13
Guam 11
Jersey 11
Solomon Islands 11
Isle of Man 10
Bhutan 10
French Polynesia 9
Virgin Islands, U.S. 7
Réunion 7
Uzbekistan 6
Monaco 6
Micronesia, Federated States of 6
Vanuatu 6
Guadeloupe 6
New Caledonia 6
Aruba 5
Cuba 5
Martinique 5
Faroe Islands 4
Timor-Leste 4
Gibraltar 4
Turks and Caicos Islands 4
Montenegro 3
Tajikistan 3
Bermuda 3
American Samoa 3
United States Minor Outlying Islands 3
Djibouti 2
Cook Islands 2
Northern Mariana Islands 2
Netherlands Antilles 2
Korea, Democratic People's Republic of 1
French Guiana 1
Anguilla 1
Åland Islands 1
Greenland 1
Holy See (Vatican City State) 1