| 年份 | 比利时 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0747131 |
| 2020 | 0.074955 |
| 2019 | 0.0746181 |
| 2018 | 0.0743849 |
| 2017 | 0.0734935 |
| 2016 | 0.0749597 |
| 2015 | 0.0735751 |
| 2014 | 0.0728875 |
| 2013 | 0.0731222 |
| 2012 | 0.0722972 |
| 2011 | 0.07474 |
| 2010 | 0.0765448 |
| 2009 | 0.077803 |
| 2008 | 0.0788051 |
| 2007 | 0.0789595 |
| 2006 | 0.0798259 |
| 2005 | 0.0804496 |
| 2004 | 0.0806054 |
| 2003 | 0.0804731 |
| 2002 | 0.0805204 |
| 2001 | 0.0821459 |
| 2000 | 0.0840873 |
| 1999 | 0.0853671 |
| 1998 | 0.085563 |
| 1997 | 0.0854512 |
| 1996 | 0.0848706 |
| 1995 | 0.0862204 |
| 1994 | 0.0929257 |
| 1993 | 0.0833955 |
| 1992 | 0.082826 |
| 1991 | 0.0759659 |
| 1990 | 0.0768507 |
| 1989 | 0.0771809 |
| 1988 | 0.0774617 |
| 1987 | 0.0776071 |
| 1986 | 0.0775719 |
| 1985 | 0.0774981 |
| 1984 | 0.0773182 |
| 1983 | 0.0770127 |
| 1982 | 0.0769051 |
| 1981 | 0.0770871 |
| 1980 | 0.0772879 |
| 1979 | 0.097681 |
| 1978 | 0.0986835 |
| 1977 | 0.099386 |
| 1976 | 0.0999162 |
| 1975 | 0.100197 |
| 1974 | 0.100589 |
| 1973 | 0.101112 |
| 1972 | 0.101636 |
| 1971 | 0.102035 |
| 1970 | 0.102221 |
| 1969 | 0.102426 |
| 1968 | 0.10282 |
| 1967 | 0.10333 |
| 1966 | 0.104326 |
| 1965 | 0.105245 |
| 1964 | 0.106418 |
| 1963 | 0.107753 |
| 1962 | 0.108887 |
| 1961 | 0.109648 |
| 1960 | - |