| Années | Nombres d'actes | |
|---|---|---|
| 1971 | 3 |
|
| 1972 | 2 |
|
| 1973 | 0 | |
| 1974 | 2 |
|
| 1975 | 2 |
|
| ... | ||
| 4 années | ||
| ... | ||
| 1980 | 2 |
|
| 1981 | 1 |
|
| 1982 | 2 |
|
| 1983 | 1 |
|
| 1984 | 3 |
|
| ... | ||
| 3 années | ||
| ... | ||
| 1988 | 1 |
|
| 1989 | 2 |
|
| 1990 | 3 |
|
| 1991 | 3 |
|
| 1992 | 2 |
|
| 1993 | 1 |
|
| 1994 | 0 | |
| 1995 | 2 |
|
| 1996 | 1 |
|
| 1997 | 1 |
|
| 1998 | 2 |
|
| 1999 | 1 |
|
| 2000 | 2 |
|
| 2001 | 2 |
|
| 2002 | 3 |
|
| 2003 | 1 |
|
| 2004 | 1 |
|
| 2005 | 4 |
|
| 2006 | 3 |
|
| 2007 | 4 |
|
| 2008 | 2 |
|
| 2009 | 5 |
|
| 2010 | 3 |
|
| 2011 | 1 |
|
| 2012 | 4 |
|
| 2013 | 4 |
|
| 2014 | 3 |
|
| 2015 | 7 |
|
| 2016 | 9 |
|
| 2017 | 5 |
|
| 2018 | 7 |
|
| 2019 | 4 |
|
| 2020 | 7 |
|
| 2021 | 8 |
|
| 2022 | 4 |
|
| 2023 | 8 |