| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 16.9 |
| 2020 | 18.1 |
| 2019 | 19 |
| 2018 | 20 |
| 2017 | 20.9 |
| 2016 | 22 |
| 2015 | 23.2 |
| 2014 | 24.6 |
| 2013 | 26.3 |
| 2012 | 28.3 |
| 2011 | 30.4 |
| 2010 | 32.4 |
| 2009 | 34 |
| 2008 | 34.9 |
| 2007 | 35.3 |
| 2006 | 35.5 |
| 2005 | 36.2 |
| 2004 | 38.3 |
| 2003 | 42.5 |
| 2002 | 48.6 |
| 2001 | 56.3 |
| 2000 | 64.8 |
| 1999 | 72.3 |
| 1998 | 78 |
| 1997 | 80.9 |
| 1996 | 80.9 |
| 1995 | 77.9 |
| 1994 | 72.6 |
| 1993 | 66 |
| 1992 | 59.3 |
| 1991 | 52.8 |
| 1990 | 47.3 |
| 1989 | 43.1 |
| 1988 | 40.3 |
| 1987 | 38.5 |
| 1986 | 37.9 |
| 1985 | 38.4 |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |