| Années | Nombres d'actes |
|---|---|
| 1970 | 8 |
| 1971 | 24 |
| 1972 | 118 |
| 1973 | 126 |
| 1974 | 148 |
| 1975 | 153 |
| 1976 | 153 |
| 1977 | 137 |
| 1978 | 124 |
| 1979 | 146 |
| 1980 | 180 |
| 1981 | 146 |
| 1982 | 126 |
| 1983 | 131 |
| 1984 | 138 |
| 1985 | 136 |
| 1986 | 130 |
| 1987 | 131 |
| 1988 | 125 |
| 1989 | 139 |
| 1990 | 134 |
| 1991 | 135 |
| 1992 | 130 |
| 1993 | 125 |
| 1994 | 117 |
| 1995 | 119 |
| 1996 | 106 |
| 1997 | 91 |
| 1998 | 116 |
| 1999 | 124 |
| 2000 | 104 |
| 2001 | 107 |
| 2002 | 135 |
| 2003 | 112 |
| 2004 | 84 |
| 2005 | 88 |
| 2006 | 95 |
| 2007 | 95 |
| 2008 | 104 |
| 2009 | 87 |
| 2010 | 91 |
| 2011 | 89 |
| 2012 | 80 |
| 2013 | 82 |
| 2014 | 85 |
| 2015 | 87 |
| 2016 | 82 |
| 2017 | 94 |
| 2018 | 91 |
| 2019 | 58 |
| 2020 | 118 |