1906
1912
1913
1917
1919
1921
1925
1925
1932
1933
1934
1934
1934
1935
1935
1935
1936
1936
1936
1936
1936
1937
1938
1939
1939
1940
1941
1941
1941
1944
1947
1948
1948
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1948
1949
1949
1949
1949
1949
1950
1950
1951
1951
1951
1951
1953
1953
1954
1955
1955
1955
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1957
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1957
1958
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1960
1960
1960
1960
1960
1960
1960
1960
1961
1962
1962
1962
1964
1964
1964
1964
1964
1964
1964
1964
1965
1966
1966
1967
1967
1967
1967
1969
1969
1969
1970
1970
1971
1972
1972
1973
1974
1974
1974
1976
1976
1976
1977
1977
1977
1978
1978
1978
1978
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1979
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1979
1979
1980
1980
1980
1980
1980
1980
1980
1981
1981
1981
1981
1981
1982
1982
1982
1982
1982
1983
1984
1984
1985
1985
1986
1986
1986
1986
1986
1987
1988
1989
1989
1990
1990
1990
1990
1990
1990
1990
1991
1991
1992
1992
1992
1993
1993
1993
1993
1993
1995
1995
1997
1997
1997
1997
1999
1999
2000
2001
2003
2006
2006
2100
