| 年份 | 比利时 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0448914 |
| 2020 | 0.0284876 |
| 2019 | 0.0422428 |
| 2018 | 0.0484488 |
| 2017 | 0.0371502 |
| 2016 | 0.030378 |
| 2015 | 0.0352518 |
| 2014 | 0.0681066 |
| 2013 | 0.0591221 |
| 2012 | 0.0633726 |
| 2011 | 0.0658456 |
| 2010 | 0.0469717 |
| 2009 | 0.0173168 |
| 2008 | 0.0183626 |
| 2007 | 0.0190731 |
| 2006 | 0.0192821 |
| 2005 | 0.0157284 |
| 2004 | 0.0158637 |
| 2003 | 0.0216928 |
| 2002 | 0.0236396 |
| 2001 | 0.020997 |
| 2000 | 0.0246159 |
| 1999 | 0.0228235 |
| 1998 | 0.0234067 |
| 1997 | 0.0203828 |
| 1996 | 0.0226157 |
| 1995 | 0.021137 |
| 1994 | 0.0233076 |
| 1993 | 0.0253688 |
| 1992 | 0.0234787 |
| 1991 | 0.029392 |
| 1990 | 0.0455475 |
| 1989 | 0.0449649 |
| 1988 | 0.0379531 |
| 1987 | 0.0537848 |
| 1986 | 0.0917054 |
| 1985 | 0.159112 |
| 1984 | 0.167177 |
| 1983 | 0.198603 |
| 1982 | 0.257547 |
| 1981 | 0.202202 |
| 1980 | 0.137648 |
| 1979 | 0.136436 |
| 1978 | 0.16284 |
| 1977 | 0.217207 |
| 1976 | 0.264359 |
| 1975 | 0.245235 |
| 1974 | 0.144268 |
| 1973 | 0.11205 |
| 1972 | 0.125281 |
| 1971 | 0.155176 |
| 1970 | 0.166721 |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |