| 1889 | 37 |
| 1890 | 83 |
| 1891 | 35 |
| 1897 | 1 |
| 1900 | 7 |
| 1901 | 152 |
| 1902 | 125 |
| 1903 | 161 |
| 1904 | 202 |
| 1905 | 189 |
| 1906 | 241 |
| 1907 | 207 |
| 1908 | 87 |
| 1909 | 22 |
| 1910 | 1 |
| 1911 | 1 |
| 1913 | 3 |
| 1914 | 222 |
| 1915 | 205 |
| 1916 | 1 |
| 1917 | 202 |
| 1918 | 349 |
| 1919 | 253 |
| 1920 | 249 |
| 1921 | 246 |
| 1922 | 259 |
| 1923 | 300 |
| 1924 | 241 |
| 1925 | 289 |
| 1926 | 343 |
| 1927 | 289 |
| 1928 | 316 |
| 1929 | 341 |
| 1930 | 366 |
| 1931 | 331 |
| 1932 | 392 |
| 1933 | 496 |
| 1934 | 528 |
| 1935 | 342 |
| 1936 | 451 |
| 1937 | 430 |
| 1938 | 474 |
| 1939 | 439 |
| 1940 | 516 |
| 1941 | 410 |
| 1942 | 445 |
| 1943 | 386 |
| 1944 | 366 |
| 1945 | 335 |
| 1946 | 264 |
| 1947 | 292 |
| 1948 | 355 |
| 1949 | 378 |
| 1950 | 368 |
| 1951 | 374 |
| 1952 | 321 |
| 1953 | 407 |
| 1954 | 383 |
| 1955 | 432 |
| 1956 | 441 |
| 1957 | 394 |
| 1958 | 409 |
| 1959 | 339 |
| 1960 | 338 |
| 1961 | 395 |
| 1962 | 310 |
| 1963 | 454 |
| 1964 | 409 |
| 1965 | 435 |
| 1966 | 350 |
| 1967 | 430 |
| 1968 | 360 |
| 1969 | 349 |
| 1970 | 434 |
| 1971 | 388 |
| 1972 | 419 |
| 1973 | 395 |
| 1974 | 330 |
| 1975 | 289 |
| 1976 | 276 |
| 1977 | 799 |
| 1978 | 1,148 |
| 1979 | 1,149 |
| 1980 | 1,232 |
| 1981 | 1,239 |
| 1982 | 1,456 |
| 1983 | 1,475 |
| 1984 | 1,559 |
| 1985 | 1,656 |
| 1986 | 1,718 |
| 1987 | 1,768 |
| 1988 | 1,738 |
| 1989 | 1,647 |
| 1990 | 1,641 |
| 1991 | 1,541 |
| 1992 | 1,308 |
| 1993 | 1,474 |
| 1994 | 1,498 |
| 1995 | 1,371 |
| 1996 | 1,432 |
| 1997 | 1,509 |
| 1998 | 1,396 |
| 1999 | 1,392 |
| 2000 | 1,406 |
| 2001 | 1,307 |
| 2002 | 1,298 |
| 2003 | 1,126 |
| 2004 | 991 |
| 2005 | 1,025 |
| 2006 | 943 |
| 2007 | 1,013 |
| 2008 | 965 |
| 2009 | 915 |
| 2010 | 912 |
| 2011 | 939 |
| 2012 | 876 |
| 2013 | 944 |
| 2014 | 779 |
| 2015 | 764 |
| 2016 | 608 |