| Year | Count |
|---|---|
| 1913 | 39 |
| 1915 | 38 |
| 1916 | 19 |
| 1917 | 55 |
| 1918 | 23 |
| 1920 | 21 |
| 1921 | 10 |
| 1923 | 14 |
| 1924 | 10 |
| 1926 | 5 |
| 1928 | 7 |
| 1938 | 5 |
| 1943 | 12 |
| 1944 | 6 |
| 1945 | 12 |
| 1947 | 18 |
| 1948 | 28 |
| 1949 | 20 |
| 1951 | 10 |
| 1952 | 38 |
| 1953 | 23 |
| 1954 | 34 |
| 1955 | 179 |
| 1956 | 291 |
| 1957 | 295 |
| 1958 | 292 |
| 1959 | 308 |
| 1960 | 405 |
| 1961 | 382 |
| 1962 | 407 |
| 1963 | 293 |
| 1964 | 265 |
| 1965 | 230 |
| 1966 | 186 |
| 1967 | 241 |
| 1968 | 157 |
| 1969 | 121 |
| 1970 | 121 |
| 1971 | 112 |
| 1972 | 67 |
| 1973 | 36 |
| 1974 | 41 |
| 1975 | 26 |
| 1977 | 5 |
| 1979 | 25 |
| 1981 | 6 |
| 2001 | 5 |
| 2021 | 5 |