| Year | Count |
|---|---|
| 1910 | 71 |
| 1911 | 49 |
| 1912 | 117 |
| 1913 | 112 |
| 1914 | 124 |
| 1915 | 152 |
| 1916 | 159 |
| 1917 | 178 |
| 1918 | 182 |
| 1919 | 164 |
| 1920 | 180 |
| 1921 | 225 |
| 1922 | 125 |
| 1923 | 120 |
| 1924 | 142 |
| 1925 | 209 |
| 1926 | 180 |
| 1927 | 147 |
| 1928 | 182 |
| 1929 | 156 |
| 1930 | 139 |
| 1931 | 147 |
| 1932 | 129 |
| 1933 | 155 |
| 1934 | 103 |
| 1935 | 134 |
| 1936 | 136 |
| 1937 | 104 |
| 1938 | 111 |
| 1939 | 127 |
| 1940 | 108 |
| 1941 | 61 |
| 1942 | 61 |
| 1943 | 65 |
| 1944 | 58 |
| 1945 | 59 |
| 1946 | 62 |
| 1947 | 48 |
| 1948 | 36 |
| 1949 | 47 |
| 1950 | 37 |
| 1951 | 42 |
| 1952 | 40 |
| 1953 | 50 |
| 1954 | 44 |
| 1955 | 39 |
| 1956 | 27 |
| 1957 | 49 |
| 1958 | 13 |
| 1959 | 25 |
| 1960 | 9 |
| 1961 | 6 |
| 1962 | 9 |
| 1965 | 5 |
| 1969 | 5 |