Entity,2001,2006,2011,2016,2021
China,10.0,6.0,2.5,2.5,2.5
Hong Kong,2.5,2.5,2.5,2.5,2.7
Japan,No data,No data,No data,No data,No data
Macao,20.1,13.9,9.4,6.1,10.1
Mongolia,30.1,26.5,14.8,8.1,3.1
North Korea,35.9,37.0,43.4,46.0,No data
South Korea,2.5,2.5,2.5,2.5,2.5
Taiwan,3.7,4.6,4.8,4.3,4.0