| Années | Nombres d'actes |
|---|---|
| 1970 | 73 |
| 1971 | 125 |
| 1972 | 466 |
| 1973 | 611 |
| 1974 | 609 |
| 1975 | 664 |
| 1976 | 785 |
| 1977 | 1323 |
| 1978 | 1474 |
| 1979 | 1493 |
| 1980 | 1449 |
| 1981 | 1588 |
| 1982 | 1613 |
| 1983 | 1689 |
| 1984 | 1573 |
| 1985 | 1739 |
| 1986 | 1762 |
| 1987 | 1597 |
| 1988 | 1643 |
| 1989 | 1673 |
| 1990 | 1766 |
| 1991 | 1776 |
| 1992 | 1727 |
| 1993 | 1826 |
| 1994 | 1832 |
| 1995 | 1800 |
| 1996 | 1898 |
| 1997 | 2195 |
| 1998 | 1768 |
| 1999 | 1977 |
| 2000 | 1898 |
| 2001 | 1831 |
| 2002 | 2057 |
| 2003 | 1981 |
| 2004 | 1840 |
| 2005 | 1842 |
| 2006 | 1867 |
| 2007 | 1916 |
| 2008 | 1949 |
| 2009 | 1916 |
| 2010 | 2076 |
| 2011 | 2100 |
| 2012 | 2059 |
| 2013 | 2151 |
| 2014 | 2094 |
| 2015 | 2099 |
| 2016 | 2116 |
| 2017 | 2158 |
| 2018 | 2134 |
| 2019 | 1749 |
| 2020 | 500 |