By date FROM SEPTEMBER 1937 TO APRIL 1994 ♦ 1. Between 1937 and 1969 September 1937 to October 1952 September 1953 to April 1965 January 1966 to December 1967 January 1968 to December 1969 ♦ 2. Between 1970 and 1975 January to December 1970 January 1971 to December 1972 January 1973 to December 1974 January to December 1975 ♦ 3. Between 1976 and 1979 January to June 1976 July to December 1976 January to December 1977 January to December 1978 January to June 1979 July to December 1979 ♦ 4. January to December 1980 January to March April to June July to September October to December ♦ 5. Between 1981 and 1986 January to December 1981 January 1982 to December 1983 January 1984 to December 1986 ♦ 6. Between 1987 and 1994 January 1987 to December 1988 January to December 1989 January 1990 to April 1994 Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)Like this:Like Loading...