These are just a few facts and things that were happening during the few listed years.

1903 1918 1922 1927 1930 1933 1934 1939 1941 1942 1945 1947 1950 1951 1953 1955 1956 1957 1960 1961 1962 1963 1969 1971 1976 1981 1986 1989 1991 1994