Nigeria 54,600
European Union 45,770
Norway 29,229
United States 26,174
India 7,427
South Africa 5,109
Pakistan 3,842
United Kingdom 1,613
China 272
Russian Federation 185
Netherlands 149
Germany 119
France 65
Canada 64
Iceland 60
Ghana 50
Benin 31
Japan 30
Kenya 23
United Arab Emirates 22
Italy 21
Poland 20
Hong Kong 19
Ireland 16
Malaysia 16
Singapore 15
Switzerland 14
Philippines 14
Turkey 13
Tanzania, United Republic of 13
Mexico 13
Korea, Republic of 13
Spain 12
Indonesia 12
Brazil 12
Cambodia 11
Australia 11
Ukraine 11
Uganda 11
Viet Nam 10
Israel 9
Sri Lanka 9
Saudi Arabia 8
Bangladesh 8
Sweden 7
Egypt 6
Austria 6
Czech Republic 6
Romania 6
Namibia 5
Côte d'Ivoire 5
Zimbabwe 5
Jordan 5
Sudan 5
Yemen 5
Portugal 4
Iraq 4
Cameroon 4
Algeria 4
Latvia 4
Senegal 4
Oman 4
Qatar 4
Panama 3
Greece 3
Belgium 3
Bulgaria 3
Serbia 3
Saint Vincent and the Grenadines 3
Malawi 3
Taiwan, Province of China 3
Liberia 3
Finland 2
Dominica 2
Thailand 2
Turks and Caicos Islands 2
Iran, Islamic Republic of 2
Chile 2
Mauritania 2
Morocco 2
Guyana 2
Myanmar 2
Bosnia and Herzegovina 2
Belize 2
Hungary 2
Nepal 2
Malta 2
Denmark 2
Macedonia, The Former Yugoslav Republic of 1
Luxembourg 1
Nicaragua 1
Ecuador 1
Bermuda 1
Dominican Republic 1
Colombia 1
Gambia 1
Armenia 1
Bolivia, Plurinational State of 1
Mongolia 1
Slovakia 1
Botswana 1
Honduras 1
Cayman Islands 1
Papua New Guinea 1
Georgia 1
Trinidad and Tobago 1
Uzbekistan 1
Zambia 1
Togo 1
Barbados 1
Tunisia 1
Monaco 1
Syrian Arab Republic 1
Bahrain 1
Mozambique 1
Bahamas 1
Saint Kitts and Nevis 1
Mauritius 1
Cyprus 1
Estonia 1
Kazakhstan 1