| Year | Count |
|---|---|
| 1910 | 58 |
| 1911 | 35 |
| 1912 | 61 |
| 1913 | 65 |
| 1914 | 75 |
| 1915 | 118 |
| 1916 | 138 |
| 1917 | 98 |
| 1918 | 135 |
| 1919 | 113 |
| 1920 | 95 |
| 1921 | 99 |
| 1922 | 86 |
| 1923 | 71 |
| 1924 | 63 |
| 1925 | 179 |
| 1926 | 105 |
| 1927 | 129 |
| 1928 | 113 |
| 1929 | 87 |
| 1930 | 112 |
| 1931 | 111 |
| 1932 | 100 |
| 1933 | 99 |
| 1934 | 65 |
| 1935 | 118 |
| 1936 | 44 |
| 1936 | 12 |
| 1937 | 41 |
| 1938 | 39 |
| 1939 | 61 |
| 1940 | 54 |
| 1941 | 20 |
| 1943 | 24 |
| 1944 | 13 |
| 1946 | 18 |
| 1947 | 21 |
| 1948 | 14 |
| 1949 | 5 |
| 1950 | 12 |
| 1950 | 6 |
| 1951 | 7 |
| 1955 | 5 |