| Year | Count |
|---|---|
| 1910 | 207 |
| 1911 | 110 |
| 1912 | 160 |
| 1913 | 227 |
| 1914 | 311 |
| 1915 | 304 |
| 1916 | 382 |
| 1917 | 338 |
| 1918 | 416 |
| 1919 | 269 |
| 1920 | 354 |
| 1921 | 307 |
| 1922 | 305 |
| 1923 | 179 |
| 1924 | 303 |
| 1925 | 277 |
| 1926 | 260 |
| 1927 | 292 |
| 1928 | 270 |
| 1929 | 261 |
| 1930 | 226 |
| 1931 | 145 |
| 1932 | 196 |
| 1933 | 143 |
| 1934 | 114 |
| 1935 | 149 |
| 1936 | 84 |
| 1937 | 58 |
| 1938 | 81 |
| 1939 | 45 |
| 1940 | 43 |
| 1941 | 32 |
| 1942 | 40 |
| 1943 | 30 |
| 1944 | 24 |
| 1945 | 35 |
| 1946 | 6 |
| 1947 | 18 |
| 1948 | 18 |
| 1949 | 30 |
| 1950 | 14 |
| 1951 | 10 |
| 1952 | 27 |
| 1953 | 12 |
| 1954 | 17 |
| 1957 | 6 |