| 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 | - |