| Year | Count |
|---|---|
| 1910 | 51 |
| 1911 | 34 |
| 1912 | 13 |
| 1913 | 11 |
| 1914 | 85 |
| 1915 | 40 |
| 1916 | 78 |
| 1917 | 84 |
| 1918 | 81 |
| 1919 | 136 |
| 1920 | 94 |
| 1921 | 75 |
| 1922 | 92 |
| 1923 | 60 |
| 1924 | 98 |
| 1925 | 113 |
| 1926 | 93 |
| 1927 | 91 |
| 1928 | 54 |
| 1929 | 105 |
| 1930 | 101 |
| 1931 | 21 |
| 1932 | 44 |
| 1933 | 22 |
| 1934 | 31 |
| 1935 | 23 |
| 1936 | 16 |
| 1937 | 36 |
| 1939 | 15 |
| 1941 | 6 |
| 1943 | 5 |
| 1948 | 5 |
| 1950 | 5 |