| Year | Count |
|---|---|
| 1910 | 58 |
| 1911 | 79 |
| 1912 | 78 |
| 1913 | 78 |
| 1914 | 93 |
| 1915 | 139 |
| 1916 | 93 |
| 1917 | 127 |
| 1918 | 68 |
| 1919 | 136 |
| 1920 | 108 |
| 1921 | 132 |
| 1922 | 128 |
| 1923 | 77 |
| 1924 | 91 |
| 1925 | 104 |
| 1926 | 121 |
| 1927 | 129 |
| 1928 | 132 |
| 1929 | 121 |
| 1930 | 101 |
| 1931 | 83 |
| 1932 | 94 |
| 1933 | 52 |
| 1934 | 83 |
| 1935 | 55 |
| 1936 | 44 |
| 1937 | 69 |
| 1938 | 34 |
| 1939 | 28 |
| 1940 | 47 |
| 1941 | 36 |
| 1942 | 41 |
| 1943 | 30 |
| 1944 | 6 |
| 1945 | 18 |
| 1946 | 15 |
| 1947 | 6 |
| 1948 | 19 |
| 1949 | 14 |
| 1950 | 8 |
| 1951 | 18 |
| 1952 | 28 |