| Year | Count |
|---|---|
| 1910 | 80 |
| 1911 | 120 |
| 1912 | 176 |
| 1913 | 198 |
| 1914 | 254 |
| 1915 | 388 |
| 1916 | 385 |
| 1917 | 438 |
| 1918 | 413 |
| 1919 | 348 |
| 1920 | 409 |
| 1921 | 382 |
| 1922 | 318 |
| 1923 | 322 |
| 1924 | 281 |
| 1925 | 259 |
| 1926 | 269 |
| 1927 | 232 |
| 1928 | 209 |
| 1929 | 220 |
| 1930 | 194 |
| 1931 | 154 |
| 1932 | 132 |
| 1933 | 116 |
| 1934 | 119 |
| 1935 | 136 |
| 1936 | 102 |
| 1937 | 79 |
| 1938 | 102 |
| 1939 | 44 |
| 1940 | 51 |
| 1941 | 63 |
| 1942 | 28 |
| 1943 | 21 |
| 1944 | 14 |
| 1945 | 15 |
| 1946 | 20 |
| 1947 | 31 |
| 1948 | 16 |
| 1949 | 15 |
| 1951 | 23 |
| 1952 | 10 |
| 1953 | 5 |
| 1954 | 15 |
| 1956 | 5 |
| 1960 | 5 |
| 2015 | 5 |
| 2016 | 18 |