| Year | Count |
|---|---|
| 1910 | 107 |
| 1911 | 111 |
| 1912 | 186 |
| 1913 | 144 |
| 1914 | 192 |
| 1915 | 251 |
| 1916 | 294 |
| 1917 | 285 |
| 1918 | 294 |
| 1919 | 254 |
| 1920 | 319 |
| 1921 | 265 |
| 1922 | 262 |
| 1923 | 199 |
| 1924 | 171 |
| 1925 | 368 |
| 1926 | 389 |
| 1927 | 378 |
| 1928 | 309 |
| 1929 | 268 |
| 1930 | 242 |
| 1931 | 223 |
| 1932 | 244 |
| 1933 | 198 |
| 1934 | 203 |
| 1935 | 194 |
| 1936 | 101 |
| 1937 | 160 |
| 1938 | 74 |
| 1939 | 89 |
| 1940 | 64 |
| 1941 | 55 |
| 1942 | 50 |
| 1943 | 80 |
| 1944 | 47 |
| 1945 | 64 |
| 1946 | 62 |
| 1947 | 46 |
| 1948 | 43 |
| 1949 | 35 |
| 1950 | 38 |
| 1951 | 61 |
| 1952 | 12 |
| 1953 | 30 |
| 1954 | 30 |
| 1956 | 17 |
| 1959 | 12 |
| 1960 | 5 |
| 1961 | 12 |
| 1963 | 5 |
| 1971 | 10 |