| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | 6.27431 |
| 2021 | 6.29609 |
| 2020 | 6.30356 |
| 2019 | 6.29604 |
| 2018 | 6.26568 |
| 2017 | 6.21208 |
| 2016 | 6.13679 |
| 2015 | 6.05007 |
| 2014 | 6.01286 |
| 2013 | 6.05032 |
| 2012 | 6.12158 |
| 2011 | 6.22401 |
| 2010 | 6.36355 |
| 2009 | 6.49712 |
| 2008 | 6.60537 |
| 2007 | 6.73188 |
| 2006 | 6.8939 |
| 2005 | 7.06634 |
| 2004 | 7.2375 |
| 2003 | 7.42193 |
| 2002 | 7.64044 |
| 2001 | 7.87747 |
| 2000 | 8.1094 |
| 1999 | 8.33335 |
| 1998 | 8.54976 |
| 1997 | 8.75788 |
| 1996 | 8.92935 |
| 1995 | 9.04599 |
| 1994 | 9.06623 |
| 1993 | 9.02205 |
| 1992 | 8.98238 |
| 1991 | 8.95422 |
| 1990 | 8.94638 |
| 1989 | 8.95562 |
| 1988 | 8.96714 |
| 1987 | 8.97642 |
| 1986 | 8.9889 |
| 1985 | 8.99307 |
| 1984 | 8.99615 |
| 1983 | 8.99369 |
| 1982 | 8.98225 |
| 1981 | 9.00204 |
| 1980 | 9.15168 |
| 1979 | 9.45833 |
| 1978 | 9.93054 |
| 1977 | 10.716 |
| 1976 | 11.649 |
| 1975 | 12.4993 |
| 1974 | 13.2989 |
| 1973 | 13.9999 |
| 1972 | 14.5031 |
| 1971 | 14.7851 |
| 1970 | 14.8548 |
| 1969 | 14.7689 |
| 1968 | 14.6424 |
| 1967 | 14.3529 |
| 1966 | 13.9428 |
| 1965 | 13.7161 |
| 1964 | 13.617 |
| 1963 | 13.6859 |
| 1962 | 14.0029 |
| 1961 | 14.1852 |
| 1960 | 14.101 |