| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | 11.7144 |
| 2021 | 11.3573 |
| 2020 | 11.1009 |
| 2019 | 10.8693 |
| 2018 | 10.7271 |
| 2017 | 10.7035 |
| 2016 | 10.7635 |
| 2015 | 10.6742 |
| 2014 | 10.4594 |
| 2013 | 10.2783 |
| 2012 | 10.0589 |
| 2011 | 9.80295 |
| 2010 | 9.53888 |
| 2009 | 9.28493 |
| 2008 | 9.0356 |
| 2007 | 8.76642 |
| 2006 | 8.46196 |
| 2005 | 8.12557 |
| 2004 | 7.76237 |
| 2003 | 7.37592 |
| 2002 | 7.00425 |
| 2001 | 6.6716 |
| 2000 | 6.365 |
| 1999 | 6.0821 |
| 1998 | 5.82595 |
| 1997 | 5.60229 |
| 1996 | 5.4049 |
| 1995 | 5.22524 |
| 1994 | 5.03993 |
| 1993 | 4.85574 |
| 1992 | 4.69278 |
| 1991 | 4.53931 |
| 1990 | 4.39373 |
| 1989 | 4.25775 |
| 1988 | 4.1303 |
| 1987 | 4.01107 |
| 1986 | 3.89955 |
| 1985 | 3.79538 |
| 1984 | 3.69776 |
| 1983 | 3.60716 |
| 1982 | 3.52783 |
| 1981 | 3.46202 |
| 1980 | 3.40947 |
| 1979 | 3.36686 |
| 1978 | 3.32739 |
| 1977 | 3.28865 |
| 1976 | 3.25384 |
| 1975 | 3.228 |
| 1974 | 3.21121 |
| 1973 | 3.20295 |
| 1972 | 3.2088 |
| 1971 | 3.22117 |
| 1970 | 3.23133 |
| 1969 | 3.2407 |
| 1968 | 3.24654 |
| 1967 | 3.25088 |
| 1966 | 3.25049 |
| 1965 | 3.24104 |
| 1964 | 3.22547 |
| 1963 | 3.20657 |
| 1962 | 3.18078 |
| 1961 | 3.14157 |
| 1960 | 3.09349 |