| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | 6.29468 |
| 2021 | 6.43205 |
| 2020 | 6.57564 |
| 2019 | 6.71428 |
| 2018 | 6.8614 |
| 2017 | 7.01061 |
| 2016 | 7.15698 |
| 2015 | 7.3106 |
| 2014 | 7.46053 |
| 2013 | 7.60004 |
| 2012 | 7.72631 |
| 2011 | 7.81281 |
| 2010 | 7.8444 |
| 2009 | 7.8236 |
| 2008 | 7.76345 |
| 2007 | 7.68369 |
| 2006 | 7.6079 |
| 2005 | 7.55283 |
| 2004 | 7.51957 |
| 2003 | 7.49198 |
| 2002 | 7.45545 |
| 2001 | 7.416 |
| 2000 | 7.37319 |
| 1999 | 7.33348 |
| 1998 | 7.29387 |
| 1997 | 7.25051 |
| 1996 | 7.23591 |
| 1995 | 7.33018 |
| 1994 | 7.56358 |
| 1993 | 7.94456 |
| 1992 | 8.57874 |
| 1991 | 9.32542 |
| 1990 | 9.98978 |
| 1989 | 10.5908 |
| 1988 | 11.0879 |
| 1987 | 11.3852 |
| 1986 | 11.4802 |
| 1985 | 11.4018 |
| 1984 | 11.1906 |
| 1983 | 10.9429 |
| 1982 | 10.567 |
| 1981 | 10.1159 |
| 1980 | 9.82329 |
| 1979 | 9.63246 |
| 1978 | 9.56364 |
| 1977 | 9.67769 |
| 1976 | 9.71443 |
| 1975 | 9.57822 |
| 1974 | 9.3684 |
| 1973 | 8.87557 |
| 1972 | 8.04513 |
| 1971 | 7.28176 |
| 1970 | 7.01324 |
| 1969 | 7.14054 |
| 1968 | 7.48504 |
| 1967 | 8.2159 |
| 1966 | 9.26223 |
| 1965 | 10.0086 |
| 1964 | 10.3906 |
| 1963 | 10.8174 |
| 1962 | 11.2079 |
| 1961 | 11.5406 |
| 1960 | 11.8941 |