| 年份 | 朝鲜民主主义人民共和国 |
|---|---|
| 2023 | - |
| 2022 | 0.37473 |
| 2021 | 0.402945 |
| 2020 | 0.434017 |
| 2019 | 0.456447 |
| 2018 | 0.476315 |
| 2017 | 0.497821 |
| 2016 | 0.519654 |
| 2015 | 0.523515 |
| 2014 | 0.49598 |
| 2013 | 0.457206 |
| 2012 | 0.418675 |
| 2011 | 0.393587 |
| 2010 | 0.425941 |
| 2009 | 0.458556 |
| 2008 | 0.460993 |
| 2007 | 0.496973 |
| 2006 | 0.557668 |
| 2005 | 0.632894 |
| 2004 | 0.700697 |
| 2003 | 0.60437 |
| 2002 | 0.533984 |
| 2001 | 0.620583 |
| 2000 | 0.698116 |
| 1999 | 0.78248 |
| 1998 | 0.856095 |
| 1997 | 0.937586 |
| 1996 | 1.01695 |
| 1995 | 1.2601 |
| 1994 | 1.51426 |
| 1993 | 1.54135 |
| 1992 | 1.52489 |
| 1991 | 1.50789 |
| 1990 | 1.47508 |
| 1989 | 1.46222 |
| 1988 | 1.46417 |
| 1987 | 1.47208 |
| 1986 | 1.47698 |
| 1985 | 1.46121 |
| 1984 | 1.44802 |
| 1983 | 1.44489 |
| 1982 | 1.45296 |
| 1981 | 1.44471 |
| 1980 | 1.42596 |
| 1979 | 1.40422 |
| 1978 | 1.38723 |
| 1977 | 1.42743 |
| 1976 | 1.56583 |
| 1975 | 1.72651 |
| 1974 | 1.89706 |
| 1973 | 2.25589 |
| 1972 | 2.48319 |
| 1971 | 2.53316 |
| 1970 | 2.64452 |
| 1969 | 2.70073 |
| 1968 | 2.81708 |
| 1967 | 2.76823 |
| 1966 | 2.54705 |
| 1965 | 2.45961 |
| 1964 | 2.47244 |
| 1963 | 2.39088 |
| 1962 | 2.19115 |
| 1961 | 2.21328 |
| 1960 | - |