| Year | Count |
|---|---|
| 1910 | 280 |
| 1911 | 239 |
| 1912 | 279 |
| 1913 | 289 |
| 1914 | 396 |
| 1915 | 390 |
| 1916 | 355 |
| 1917 | 427 |
| 1918 | 453 |
| 1919 | 386 |
| 1920 | 399 |
| 1921 | 388 |
| 1922 | 365 |
| 1923 | 238 |
| 1924 | 243 |
| 1925 | 279 |
| 1926 | 222 |
| 1927 | 275 |
| 1928 | 266 |
| 1929 | 267 |
| 1930 | 211 |
| 1931 | 221 |
| 1932 | 153 |
| 1933 | 184 |
| 1934 | 161 |
| 1935 | 188 |
| 1936 | 113 |
| 1937 | 120 |
| 1938 | 90 |
| 1939 | 113 |
| 1940 | 87 |
| 1941 | 91 |
| 1942 | 112 |
| 1943 | 70 |
| 1944 | 60 |
| 1945 | 33 |
| 1946 | 39 |
| 1947 | 72 |
| 1948 | 45 |
| 1949 | 38 |
| 1950 | 29 |
| 1951 | 33 |
| 1952 | 27 |
| 1953 | 12 |
| 1954 | 34 |
| 1955 | 17 |
| 1958 | 5 |
| 1962 | 14 |