| Year | Count |
|---|---|
| 1936 | 6 |
| 1940 | 5 |
| 1942 | 20 |
| 1943 | 58 |
| 1945 | 73 |
| 1946 | 101 |
| 1947 | 91 |
| 1948 | 74 |
| 1949 | 14 |
| 1950 | 30 |
| 1951 | 35 |
| 1952 | 69 |
| 1953 | 46 |
| 1954 | 41 |
| 1955 | 67 |
| 1956 | 73 |
| 1957 | 227 |
| 1958 | 223 |
| 1959 | 259 |
| 1960 | 266 |
| 1961 | 184 |
| 1962 | 136 |
| 1963 | 174 |
| 1964 | 161 |
| 1965 | 80 |
| 1966 | 27 |
| 1967 | 48 |
| 1968 | 44 |
| 1969 | 45 |
| 1970 | 110 |
| 1971 | 117 |
| 1972 | 85 |
| 1973 | 111 |
| 1974 | 59 |
| 1975 | 98 |
| 1976 | 83 |
| 1977 | 101 |
| 1978 | 80 |
| 1979 | 134 |
| 1980 | 103 |
| 1981 | 106 |
| 1982 | 107 |
| 1983 | 78 |
| 1984 | 59 |
| 1985 | 87 |
| 1986 | 64 |
| 1987 | 16 |
| 1988 | 18 |
| 1990 | 17 |
| 1991 | 6 |
| 1995 | 5 |
| 2022 | 6 |
| 2023 | 12 |
| 2024 | 21 |