| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | 6.76385 |
| 2021 | 6.79937 |
| 2020 | 6.82154 |
| 2019 | 6.8283 |
| 2018 | 6.81031 |
| 2017 | 6.76636 |
| 2016 | 6.69816 |
| 2015 | 6.61752 |
| 2014 | 6.58962 |
| 2013 | 6.64119 |
| 2012 | 6.72889 |
| 2011 | 6.8501 |
| 2010 | 7.01107 |
| 2009 | 7.16411 |
| 2008 | 7.28797 |
| 2007 | 7.4305 |
| 2006 | 7.61227 |
| 2005 | 7.80747 |
| 2004 | 8.00297 |
| 2003 | 8.21462 |
| 2002 | 8.46418 |
| 2001 | 8.73447 |
| 2000 | 9.00019 |
| 1999 | 9.2594 |
| 1998 | 9.51144 |
| 1997 | 9.75284 |
| 1996 | 9.95241 |
| 1995 | 10.0907 |
| 1994 | 10.1241 |
| 1993 | 10.0884 |
| 1992 | 10.0612 |
| 1991 | 10.0513 |
| 1990 | 10.0646 |
| 1989 | 10.096 |
| 1988 | 10.1293 |
| 1987 | 10.1596 |
| 1986 | 10.1936 |
| 1985 | 10.2187 |
| 1984 | 10.243 |
| 1983 | 10.2616 |
| 1982 | 10.2709 |
| 1981 | 10.3166 |
| 1980 | 10.5119 |
| 1979 | 10.8892 |
| 1978 | 11.4591 |
| 1977 | 12.3935 |
| 1976 | 13.5051 |
| 1975 | 14.5295 |
| 1974 | 15.5041 |
| 1973 | 16.3753 |
| 1972 | 17.0298 |
| 1971 | 17.4363 |
| 1970 | 17.5997 |
| 1969 | 17.5846 |
| 1968 | 17.5237 |
| 1967 | 17.2721 |
| 1966 | 16.875 |
| 1965 | 16.6944 |
| 1964 | 16.6696 |
| 1963 | 16.8547 |
| 1962 | 17.3491 |
| 1961 | 17.6824 |
| 1960 | 17.6901 |