| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 13.9 |
| 2020 | 14.8 |
| 2019 | 15.5 |
| 2018 | 16.2 |
| 2017 | 17 |
| 2016 | 17.9 |
| 2015 | 18.9 |
| 2014 | 20 |
| 2013 | 21.4 |
| 2012 | 23.1 |
| 2011 | 24.8 |
| 2010 | 26.5 |
| 2009 | 27.8 |
| 2008 | 28.6 |
| 2007 | 28.9 |
| 2006 | 29 |
| 2005 | 29.6 |
| 2004 | 31.5 |
| 2003 | 35.1 |
| 2002 | 40.6 |
| 2001 | 47.6 |
| 2000 | 55.1 |
| 1999 | 62.2 |
| 1998 | 67.4 |
| 1997 | 70.1 |
| 1996 | 70.2 |
| 1995 | 67.5 |
| 1994 | 62.5 |
| 1993 | 56.4 |
| 1992 | 50.1 |
| 1991 | 44.3 |
| 1990 | 39.4 |
| 1989 | 35.7 |
| 1988 | 33.1 |
| 1987 | 31.7 |
| 1986 | 31.2 |
| 1985 | 31.6 |
| 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 | - |