| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 2 |
0.3%
|
| 1840 | 1 |
0.2%
|
|
| 1863 | 1 |
0.2%
|
|
| 1866 | 1 |
0.2%
|
|
| 1870 | 1 |
0.2%
|
|
| 1876 | 1 |
0.2%
|
|
| 1877 | 1 |
0.2%
|
|
| 1878 | 1 |
0.2%
|
|
| 1890 | 1 |
0.2%
|
|
| 1892 | 1 |
0.2%
|
|
| 1901 | 1 |
0.2%
|
|
| 1902 | 1 |
0.2%
|
|
| 1906 | 1 |
0.2%
|
|
| 1907 | 1 |
0.2%
|
|
| 1908 | 1 |
0.2%
|
|
| 1910 | 1 |
0.2%
|
|
| 1914 | 1 |
0.2%
|
|
| 1915 | 2 |
0.3%
|
|
| 1919 | 1 |
0.2%
|
|
| 1920 | 3 |
0.5%
|
|
| 1923 | 2 |
0.3%
|
|
| 1924 | 1 |
0.2%
|
|
| 1925 | 1 |
0.2%
|
|
| 1926 | 1 |
0.2%
|
|
| 1927 | 1 |
0.2%
|
|
| 1928 | 2 |
0.3%
|
|
| 1929 | 2 |
0.3%
|
|
| 1930 | 3 |
0.5%
|
|
| 1931 | 2 |
0.3%
|
|
| 1932 | 2 |
0.3%
|
|
| 1934 | 1 |
0.2%
|
|
| 1935 | 1 |
0.2%
|
|
| 1936 | 2 |
0.3%
|
|
| 1937 | 4 |
0.6%
|
|
| 1938 | 6 |
1%
|
|
| 1939 | 4 |
0.6%
|
|
| 1940 | 4 |
0.6%
|
|
| 1941 | 1 |
0.2%
|
|
| 1942 | 1 |
0.2%
|
|
| 1943 | 1 |
0.2%
|
|
| 1944 | 3 |
0.5%
|
|
| 1945 | 2 |
0.3%
|
|
| 1946 | 3 |
0.5%
|
|
| 1947 | 3 |
0.5%
|
|
| 1948 | 1 |
0.2%
|
|
| 1949 | 1 |
0.2%
|
|
| 1950 | 9 |
1.4%
|
|
| 1951 | 5 |
0.8%
|
|
| 1952 | 3 |
0.5%
|
|
| 1953 | 3 |
0.5%
|
|
| 1954 | 1 |
0.2%
|
|
| 1955 | 1 |
0.2%
|
|
| 1956 | 6 |
1%
|
|
| 1957 | 5 |
0.8%
|
|
| 1958 | 5 |
0.8%
|
|
| 1959 | 4 |
0.6%
|
|
| 1960 | 9 |
1.4%
|
|
| 1961 | 4 |
0.6%
|
|
| 1962 | 5 |
0.8%
|
|
| 1963 | 12 |
1.9%
|
|
| 1964 | 4 |
0.6%
|
|
| 1965 | 4 |
0.6%
|
|
| 1966 | 7 |
1.1%
|
|
| 1967 | 3 |
0.5%
|
|
| 1968 | 9 |
1.4%
|
|
| 1969 | 3 |
0.5%
|
|
| 1970 | 4 |
0.6%
|
|
| 1971 | 9 |
1.4%
|
|
| 1972 | 4 |
0.6%
|
|
| 1973 | 7 |
1.1%
|
|
| 1974 | 6 |
1%
|
|
| 1975 | 11 |
1.8%
|
|
| 1976 | 12 |
1.9%
|
|
| 1977 | 6 |
1%
|
|
| 1978 | 8 |
1.3%
|
|
| 1979 | 12 |
1.9%
|
|
| 1980 | 15 |
2.4%
|
|
| 1981 | 9 |
1.4%
|
|
| 1982 | 13 |
2.1%
|
|
| 1983 | 8 |
1.3%
|
|
| 1984 | 11 |
1.8%
|
|
| 1985 | 15 |
2.4%
|
|
| 1986 | 14 |
2.3%
|
|
| 1987 | 6 |
1%
|
|
| 1988 | 7 |
1.1%
|
|
| 1989 | 9 |
1.4%
|
|
| 1990 | 20 |
3.2%
|
|
| 1991 | 10 |
1.6%
|
|
| 1992 | 23 |
3.7%
|
|
| 1993 | 13 |
2.1%
|
|
| 1994 | 11 |
1.8%
|
|
| 1995 | 14 |
2.3%
|
|
| 1996 | 12 |
1.9%
|
|
| 1997 | 17 |
2.7%
|
|
| 1998 | 19 |
3.1%
|
|
| 1999 | 21 |
3.4%
|
|
| 2000 | 12 |
1.9%
|
|
| 2001 | 12 |
1.9%
|
|
| 2002 | 19 |
3.1%
|
|
| 2003 | 30 |
4.8%
|
|
| 2004 | 19 |
3.1%
|
|
| 2005 | 2 |
0.3%
|
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