| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | 6.8606 |
| 2021 | 6.99579 |
| 2020 | 7.13716 |
| 2019 | 7.27671 |
| 2018 | 7.40923 |
| 2017 | 7.53177 |
| 2016 | 7.61845 |
| 2015 | 7.6534 |
| 2014 | 7.63314 |
| 2013 | 7.56902 |
| 2012 | 7.48355 |
| 2011 | 7.3984 |
| 2010 | 7.32953 |
| 2009 | 7.2813 |
| 2008 | 7.23826 |
| 2007 | 7.19216 |
| 2006 | 7.1485 |
| 2005 | 7.09975 |
| 2004 | 7.0536 |
| 2003 | 7.00604 |
| 2002 | 6.94556 |
| 2001 | 6.90508 |
| 2000 | 6.96909 |
| 1999 | 7.15674 |
| 1998 | 7.47361 |
| 1997 | 8.02794 |
| 1996 | 8.68891 |
| 1995 | 9.2754 |
| 1994 | 9.81934 |
| 1993 | 10.2854 |
| 1992 | 10.5675 |
| 1991 | 10.6591 |
| 1990 | 10.5874 |
| 1989 | 10.3905 |
| 1988 | 10.1594 |
| 1987 | 9.80961 |
| 1986 | 9.38981 |
| 1985 | 9.11818 |
| 1984 | 8.9411 |
| 1983 | 8.8777 |
| 1982 | 8.98508 |
| 1981 | 9.0183 |
| 1980 | 8.8788 |
| 1979 | 8.65692 |
| 1978 | 8.16102 |
| 1977 | 7.33519 |
| 1976 | 6.57216 |
| 1975 | 6.27083 |
| 1974 | 6.32797 |
| 1973 | 6.58173 |
| 1972 | 7.18507 |
| 1971 | 8.0774 |
| 1970 | 8.72536 |
| 1969 | 9.07111 |
| 1968 | 9.46081 |
| 1967 | 9.83758 |
| 1966 | 10.1794 |
| 1965 | 10.5195 |
| 1964 | 10.8838 |
| 1963 | 11.2345 |
| 1962 | 11.5077 |
| 1961 | 11.648 |
| 1960 | 11.6576 |