| 年份 | 比利时 |
|---|---|
| 2023 | - |
| 2022 | 1.17974 |
| 2021 | 1.05034 |
| 2020 | 1.01451 |
| 2019 | 0.888487 |
| 2018 | 0.891358 |
| 2017 | 0.883563 |
| 2016 | 0.894706 |
| 2015 | 0.909284 |
| 2014 | 0.97096 |
| 2013 | 1.00896 |
| 2012 | 1.04176 |
| 2011 | 1.05222 |
| 2010 | 1.09049 |
| 2009 | 1.16777 |
| 2008 | 1.22191 |
| 2007 | 1.09802 |
| 2006 | 1.05612 |
| 2005 | 1.09664 |
| 2004 | 1.14927 |
| 2003 | 1.21499 |
| 2002 | 1.21571 |
| 2001 | 1.2765 |
| 2000 | 1.34121 |
| 1999 | 1.38584 |
| 1998 | 1.46392 |
| 1997 | 1.47698 |
| 1996 | 1.5401 |
| 1995 | 1.56575 |
| 1994 | 1.67714 |
| 1993 | 1.73597 |
| 1992 | 1.83233 |
| 1991 | 2.28769 |
| 1990 | 2.35544 |
| 1989 | 2.46085 |
| 1988 | 2.62875 |
| 1987 | 2.90179 |
| 1986 | 2.95377 |
| 1985 | 2.93123 |
| 1984 | 3.0079 |
| 1983 | 3.19141 |
| 1982 | 3.26994 |
| 1981 | 3.36605 |
| 1980 | 3.2502 |
| 1979 | 3.26134 |
| 1978 | 3.26152 |
| 1977 | 3.14325 |
| 1976 | 3.09337 |
| 1975 | 3.06503 |
| 1974 | 2.76142 |
| 1973 | 2.83531 |
| 1972 | 2.88076 |
| 1971 | 2.89893 |
| 1970 | 2.91864 |
| 1969 | 2.93181 |
| 1968 | 3.11509 |
| 1967 | 3.13458 |
| 1966 | 3.11259 |
| 1965 | 2.97306 |
| 1964 | 3.21347 |
| 1963 | 3.21663 |
| 1962 | 3.28475 |
| 1961 | 3.25907 |
| 1960 | 3.39735 |