| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | 1.38998 |
| 2021 | 1.24929 |
| 2020 | 1.10075 |
| 2019 | 0.951835 |
| 2018 | 0.804213 |
| 2017 | 0.662993 |
| 2016 | 0.535363 |
| 2015 | 0.424968 |
| 2014 | 0.33857 |
| 2013 | 0.276929 |
| 2012 | 0.231982 |
| 2011 | 0.199768 |
| 2010 | 0.17654 |
| 2009 | 0.160782 |
| 2008 | 0.152652 |
| 2007 | 0.148379 |
| 2006 | 0.144864 |
| 2005 | 0.141822 |
| 2004 | 0.139291 |
| 2003 | 0.137247 |
| 2002 | 0.136514 |
| 2001 | 0.136886 |
| 2000 | 0.137076 |
| 1999 | 0.136793 |
| 1998 | 0.136333 |
| 1997 | 0.136123 |
| 1996 | 0.135976 |
| 1995 | 0.135063 |
| 1994 | 0.131721 |
| 1993 | 0.128328 |
| 1992 | 0.126172 |
| 1991 | 0.123631 |
| 1990 | 0.121863 |
| 1989 | 0.121254 |
| 1988 | 0.122231 |
| 1987 | 0.125194 |
| 1986 | 0.128701 |
| 1985 | 0.131491 |
| 1984 | 0.133785 |
| 1983 | 0.135489 |
| 1982 | 0.136398 |
| 1981 | 0.136936 |
| 1980 | 0.137486 |
| 1979 | 0.137825 |
| 1978 | 0.137732 |
| 1977 | 0.137281 |
| 1976 | 0.136562 |
| 1975 | 0.135879 |
| 1974 | 0.135281 |
| 1973 | 0.134432 |
| 1972 | 0.133525 |
| 1971 | 0.132731 |
| 1970 | 0.132115 |
| 1969 | 0.131749 |
| 1968 | 0.131867 |
| 1967 | 0.132638 |
| 1966 | 0.132794 |
| 1965 | 0.131147 |
| 1964 | 0.127597 |
| 1963 | 0.121654 |
| 1962 | 0.113232 |
| 1961 | 0.103886 |
| 1960 | 0.0953383 |