Asia 8 Tajikistan 8 Afghanistan 7 Europe 6 China 5 India 5 Iran 5 Kazakhstan 5 Russia 5 Turkmenistan 5 Uzbekistan 5 Mongolia 3 Nepal 3 Bhutan 2 Pakistan 2 Vietnam 2 Africa 1 Entire world 1 Indonesia 1 Kyrgyzstan 1 Laos 1 Myanmar 1 North Korea 1 South Korea 1 Soviet Union (-1992) 1