| 年份 | 蒙古 |
|---|---|
| 2023 | - |
| 2022 | 4.09767 |
| 2021 | 4.05303 |
| 2020 | 4.01059 |
| 2019 | 3.96169 |
| 2018 | 3.85081 |
| 2017 | 3.71692 |
| 2016 | 3.59118 |
| 2015 | 3.45036 |
| 2014 | 3.26301 |
| 2013 | 3.07206 |
| 2012 | 2.88163 |
| 2011 | 2.70075 |
| 2010 | 2.53336 |
| 2009 | 2.39111 |
| 2008 | 2.27631 |
| 2007 | 2.18308 |
| 2006 | 2.10861 |
| 2005 | 2.04658 |
| 2004 | 1.9986 |
| 2003 | 1.98076 |
| 2002 | 2.00044 |
| 2001 | 2.06422 |
| 2000 | 2.17374 |
| 1999 | 2.29324 |
| 1998 | 2.36998 |
| 1997 | 2.38881 |
| 1996 | 2.357 |
| 1995 | 2.29022 |
| 1994 | 2.23499 |
| 1993 | 2.22321 |
| 1992 | 2.24816 |
| 1991 | 2.28972 |
| 1990 | 2.32557 |
| 1989 | 2.3388 |
| 1988 | 2.33118 |
| 1987 | 2.30797 |
| 1986 | 2.27969 |
| 1985 | 2.2697 |
| 1984 | 2.28272 |
| 1983 | 2.3162 |
| 1982 | 2.37461 |
| 1981 | 2.44659 |
| 1980 | 2.52163 |
| 1979 | 2.59929 |
| 1978 | 2.66586 |
| 1977 | 2.70875 |
| 1976 | 2.73212 |
| 1975 | 2.74341 |
| 1974 | 2.75445 |
| 1973 | 2.78604 |
| 1972 | 2.84666 |
| 1971 | 2.93304 |
| 1970 | 3.04622 |
| 1969 | 3.17901 |
| 1968 | 3.30275 |
| 1967 | 3.39361 |
| 1966 | 3.45248 |
| 1965 | 3.49994 |
| 1964 | 3.56662 |
| 1963 | 3.65744 |
| 1962 | 3.73847 |
| 1961 | 3.78612 |
| 1960 | 3.80551 |