| Year | Count |
|---|---|
| 1974 | 94 |
| 1974 | 45 |
| 1975 | 92 |
| 1975 | 40 |
| 1976 | 57 |
| 1976 | 13 |
| 1977 | 90 |
| 1977 | 7 |
| 1978 | 72 |
| 1979 | 38 |
| 1980 | 62 |
| 1981 | 34 |
| 1982 | 26 |
| 1983 | 21 |
| 1984 | 23 |
| 1985 | 28 |
| 1986 | 19 |
| 1987 | 31 |
| 1988 | 17 |
| 1989 | 17 |
| 1990 | 12 |
| 1991 | 23 |
| 1991 | 5 |
| 1992 | 29 |
| 1993 | 21 |
| 1994 | 12 |
| 1995 | 15 |
| 1996 | 11 |
| 1997 | 11 |
| 1998 | 13 |
| 1999 | 7 |
| 2000 | 10 |
| 2001 | 7 |
| 2002 | 10 |
| 2004 | 7 |