| 年份 | 比利时  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 0.0134811 | 
| 2020 | 0.0136986 | 
| 2019 | 0.0150775 | 
| 2018 | 0.019231 | 
| 2017 | 0.0166338 | 
| 2016 | 0.0188102 | 
| 2015 | 0.0195238 | 
| 2014 | 0.0199877 | 
| 2013 | 0.0193492 | 
| 2012 | 0.0186402 | 
| 2011 | 0.0192848 | 
| 2010 | 0.0192858 | 
| 2009 | 0.0173168 | 
| 2008 | 0.0183626 | 
| 2007 | 0.0190731 | 
| 2006 | 0.017747 | 
| 2005 | 0.015671 | 
| 2004 | 0.0158637 | 
| 2003 | 0.0216928 | 
| 2002 | 0.0236396 | 
| 2001 | 0.020997 | 
| 2000 | 0.0245922 | 
| 1999 | 0.022823 | 
| 1998 | 0.0234067 | 
| 1997 | 0.0203812 | 
| 1996 | 0.0225979 | 
| 1995 | 0.0211347 | 
| 1994 | 0.0233014 | 
| 1993 | 0.0253403 | 
| 1992 | 0.0232524 | 
| 1991 | 0.0280898 | 
| 1990 | 0.0431298 | 
| 1989 | 0.0446108 | 
| 1988 | 0.0341236 | 
| 1987 | 0.0330657 | 
| 1986 | 0.0353654 | 
| 1985 | 0.0400918 | 
| 1984 | 0.0357353 | 
| 1983 | 0.0394815 | 
| 1982 | 0.0410937 | 
| 1981 | 0.0350136 | 
| 1980 | 0.0358547 | 
| 1979 | 0.0343908 | 
| 1978 | 0.0334712 | 
| 1977 | 0.0340763 | 
| 1976 | 0.0445205 | 
| 1975 | 0.0442814 | 
| 1974 | 0.045341 | 
| 1973 | 0.051644 | 
| 1972 | 0.0436471 | 
| 1971 | 0.0449257 | 
| 1970 | 0.0445489 | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |