Germany 31,782
United States 3,808
Austria 3,422
Switzerland 1,661
European Union 851
Russian Federation 447
Netherlands 363
United Kingdom 197
France 145
Italy 140
Poland 83
Luxembourg 67
Hungary 64
Turkey 63
Spain 52
Korea, Republic of 51
Japan 44
Sweden 42
Romania 37
Czech Republic 37
Belgium 35
Ukraine 34
Brazil 33
China 32
Canada 27
Indonesia 27
Greece 25
Denmark 23
Finland 23
Iran, Islamic Republic of 22
Slovenia 21
Mexico 20
Croatia 19
Slovakia 19
Serbia 18
Viet Nam 17
Israel 16
Norway 16
Thailand 16
India 16
Portugal 16
Bulgaria 15
Lithuania 13
Australia 12
Tunisia 11
Algeria 11
South Africa 9
Hong Kong 8
Kazakhstan 7
Albania 7
Egypt 7
Taiwan, Province of China 7
Philippines 6
Morocco 6
Estonia 6
Latvia 6
New Zealand 5
Mongolia 5
Liechtenstein 5
Bosnia and Herzegovina 5
Uzbekistan 4
Ireland 4
Argentina 4
Pakistan 4
Chile 4
Malaysia 4
Moldova, Republic of 4
Georgia 3
Kuwait 3
Saudi Arabia 3
Singapore 3
Paraguay 3
Colombia 3
Belarus 3
Ecuador 2
Peru 2
Lebanon 2
Kyrgyzstan 2
Ghana 2
Venezuela, Bolivarian Republic of 2
United Arab Emirates 2
Cyprus 2
Sudan 2
Palestinian Territory, Occupied 2
Dominican Republic 1
Ethiopia 1
Isle of Man 1
Mauritius 1
Bangladesh 1
Macedonia, The Former Yugoslav Republic of 1
Nigeria 1
Libyan Arab Jamahiriya 1
Bolivia, Plurinational State of 1
Sri Lanka 1
Guatemala 1
Bahrain 1
Åland Islands 1
Korea, Democratic People's Republic of 1
Tanzania, United Republic of 1
Azerbaijan 1
Syrian Arab Republic 1
Macao 1
Uruguay 1
Jamaica 1
Namibia 1
Oman 1
Nepal 1