| Années | Nombres d'actes |
|---|---|
| 1972 | 5 |
| 1973 | 20 |
| 1974 | 4 |
| 1975 | 7 |
| 1976 | 17 |
| 1977 | 21 |
| 1978 | 24 |
| 1979 | 27 |
| 1980 | 18 |
| 1981 | 29 |
| 1982 | 27 |
| 1983 | 37 |
| 1984 | 33 |
| 1985 | 29 |
| 1986 | 39 |
| 1987 | 35 |
| 1988 | 31 |
| 1989 | 50 |
| 1990 | 48 |
| 1991 | 48 |
| 1992 | 58 |
| 1993 | 55 |
| 1994 | 73 |
| 1995 | 55 |
| 1996 | 53 |
| 1997 | 50 |
| 1998 | 60 |
| 1999 | 63 |
| 2000 | 47 |
| 2001 | 69 |
| 2002 | 58 |
| 2003 | 63 |
| 2004 | 71 |
| 2005 | 74 |
| 2006 | 69 |
| 2007 | 55 |
| 2008 | 60 |
| 2009 | 84 |
| 2010 | 76 |
| 2011 | 73 |
| 2012 | 79 |
| 2013 | 75 |
| 2014 | 68 |
| 2015 | 69 |
| 2016 | 55 |
| 2017 | 41 |
| 2018 | 46 |
| 2019 | 51 |
| 2020 | 46 |
| 2021 | 46 |
| 2022 | 34 |
| 2023 | 38 |