year,count
1891,2
1892,4
1893,4
1894,19
1895,53
1896,33
1897,46
1898,30
1899,59
1900,120
1901,214
1902,98
1903,99
1904,115
1905,98
1906,116
1907,127
1908,87
1909,38
1910,51
1911,47
1912,151
1913,125
1914,146
1915,59
1916,83
1917,101
1918,144
1919,174
1920,260
1921,159
1922,158
1923,243
1924,55
1925,225
1926,293
1927,462
1928,195
1929,338
1930,306
1931,374
1932,235
1933,128
1934,175
1935,235
1936,236
1937,80
1938,284
1939,157
1940,237
1941,503
1942,486
1943,563
1944,652
1945,583
1946,641
1947,682
1948,457
1949,443
1950,479
1951,145
1952,105
1953,135
1954,103
1955,182
1956,74
1957,54
1958,177
1959,274
1960,309
1961,231
1962,313
1963,323
1964,410
1965,76
1966,311
1967,281
1968,208
1969,183
1970,615
1971,328
1972,430
1973,315
1974,233
1975,245
1976,201
1977,338
1978,474
1979,122
1980,136
1981,519
1982,203
1983,367
1984,870
1985,853
1986,747
1987,806
1988,759
1989,730
1990,464
1991,81
1992,86
1993,543
1994,202
1995,474
1996,7
1997,421
1998,19
1999,141
2000,0
2001,0
2002,0
2003,4
2004,0
2005,0
2006,0
2007,0
2008,0
2009,0
2010,1