| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | 8.42102 |
| 2021 | 8.40889 |
| 2020 | 8.2757 |
| 2019 | 8.05034 |
| 2018 | 7.80233 |
| 2017 | 7.46676 |
| 2016 | 7.08483 |
| 2015 | 6.82154 |
| 2014 | 6.63138 |
| 2013 | 6.52321 |
| 2012 | 6.53834 |
| 2011 | 6.49983 |
| 2010 | 6.33598 |
| 2009 | 6.11466 |
| 2008 | 5.70293 |
| 2007 | 5.06527 |
| 2006 | 4.47846 |
| 2005 | 4.19599 |
| 2004 | 4.12424 |
| 2003 | 4.16501 |
| 2002 | 4.4316 |
| 2001 | 4.88049 |
| 2000 | 5.17133 |
| 1999 | 5.28627 |
| 1998 | 5.43571 |
| 1997 | 5.5492 |
| 1996 | 5.62359 |
| 1995 | 5.69705 |
| 1994 | 5.77901 |
| 1993 | 5.84471 |
| 1992 | 5.85932 |
| 1991 | 5.79616 |
| 1990 | 5.64516 |
| 1989 | 5.41467 |
| 1988 | 5.09476 |
| 1987 | 4.70073 |
| 1986 | 4.28563 |
| 1985 | 3.88775 |
| 1984 | 3.51257 |
| 1983 | 3.17005 |
| 1982 | 2.89084 |
| 1981 | 2.67642 |
| 1980 | 2.50644 |
| 1979 | 2.3723 |
| 1978 | 2.28581 |
| 1977 | 2.23058 |
| 1976 | 2.18969 |
| 1975 | 2.16736 |
| 1974 | 2.16406 |
| 1973 | 2.17304 |
| 1972 | 2.19158 |
| 1971 | 2.21492 |
| 1970 | 2.24272 |
| 1969 | 2.27868 |
| 1968 | 2.32923 |
| 1967 | 2.39842 |
| 1966 | 2.46409 |
| 1965 | 2.50153 |
| 1964 | 2.50854 |
| 1963 | 2.48145 |
| 1962 | 2.42109 |
| 1961 | 2.363 |
| 1960 | 2.34022 |