Nigeria 1,454,526
United States 261,505
European Union 165,044
South Africa 143,320
United Kingdom 81,319
Viet Nam 32,388
Germany 23,573
Canada 18,455
Italy 13,721
Ireland 13,623
France 10,150
Philippines 9,321
China 8,837
United Arab Emirates 8,673
Ghana 8,203
Romania 7,390
Sweden 6,789
India 6,638
Mexico 5,452
Spain 5,290
Norway 5,059
Netherlands 4,736
Thailand 4,401
Argentina 4,294
Turkey 4,241
Poland 3,797
Malaysia 3,376
Brazil 3,355
Australia 3,191
Cameroon 3,090
Indonesia 3,020
Greece 3,013
Benin 2,995
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 1,833
Switzerland 1,827
Egypt 1,649
Kenya 1,602
Congo, The Democratic Republic of the 1,584
Liberia 1,575
Hungary 1,560
Singapore 1,546
Togo 1,462
Korea, Republic of 1,202
Senegal 1,122
Zambia 1,018
Mozambique 1,009
Ukraine 1,009
Czech Republic 891
Israel 891
Mali 836
Portugal 769
Uganda 692
Niger 653
New Zealand 649
Cambodia 646
Haiti 642
Burkina Faso 614
Sierra Leone 614
Pakistan 611
Gabon 561
Gambia 545
Kuwait 524
Denmark 499
Libyan Arab Jamahiriya 488
Namibia 487
Hong Kong 478
Bulgaria 381
Bangladesh 364
Morocco 352
Croatia 340
Taiwan, Province of China 327
Angola 325
Dominican Republic 322
Colombia 300
Panama 294
Oman 285
Guinea 283
Sri Lanka 282
Ethiopia 245
Jamaica 245
Chile 239
Tunisia 231
Tanzania, United Republic of 219
Iceland 212
Malawi 208
Malta 200
Botswana 194
Luxembourg 181
Rwanda 173
Cyprus 170
Iran, Islamic Republic of 170
Algeria 155
Slovenia 154
Myanmar 150
Trinidad and Tobago 144
Ecuador 144
Albania 143
Slovakia 135
Lao People's Democratic Republic 134
Peru 123
Iraq 123
Congo 121
Lithuania 119
Sudan 118
Somalia 117
Jordan 115
Georgia 111
Mauritius 110
Lebanon 107
Mauritania 106
Zimbabwe 106
Fiji 97
Kazakhstan 96
Puerto Rico 95
Venezuela, Bolivarian Republic of 90
Lesotho 88
Chad 80
Sao Tome and Principe 77
Cape Verde 75
Latvia 73
Equatorial Guinea 70
Costa Rica 64
Swaziland 63
Bolivia, Plurinational State of 60
Madagascar 59
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
Tonga 15
Central African Republic 14
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