| 0 | 29 |
| 1965 | 1 |
| 1967 | 1 |
| 1968 | 3 |
| 1969 | 3 |
| 1970 | 7 |
| 1971 | 9 |
| 1972 | 13 |
| 1973 | 28 |
| 1974 | 29 |
| 1975 | 40 |
| 1976 | 28 |
| 1977 | 41 |
| 1978 | 42 |
| 1979 | 45 |
| 1980 | 62 |
| 1981 | 72 |
| 1982 | 66 |
| 1983 | 107 |
| 1984 | 108 |
| 1985 | 133 |
| 1986 | 151 |
| 1987 | 120 |
| 1988 | 163 |
| 1989 | 165 |
| 1990 | 126 |
| 1991 | 144 |
| 1992 | 168 |
| 1993 | 138 |
| 1994 | 186 |
| 1995 | 195 |
| 1996 | 165 |
| 1997 | 163 |
| 1998 | 306 |
| 1999 | 269 |
| 2000 | 294 |
| 2001 | 339 |
| 2002 | 306 |
| 2003 | 402 |
| 2004 | 441 |
| 2005 | 421 |
| 2006 | 485 |
| 2007 | 624 |
| 2008 | 464 |
| 2009 | 438 |
| 2010 | 473 |
| 2011 | 463 |
| 2012 | 446 |
| 2013 | 560 |
| 2014 | 585 |
| 2015 | 569 |
| 2016 | 560 |
| 2017 | 482 |
| 2018 | 470 |
| 2019 | 560 |
| 2020 | 471 |
| 2021 | 505 |
| 2022 | 584 |
| 2023 | 506 |
| 2024 | 206 |
| 9999 | 8 |