SPED timeline

Main

1784
1817
1870
1886
1918
1922
1930
1943
1946
1947
1958
1958
1958
1959
1961
1961
1963
1965
1965
1965
1966
1968
1971
1972
1972
1973
1974
1975
1976
1977
1983
1986
1989
1989
1989
1990
1990
2001
2004
2004