| | | 1948 | | | | | | | | | | 1955 4 1 | | | 1955 | | | | | | | | | | | | | 300 | | | | | | | | | | | | 1973 | | | | 1975 | | | | | | 1979 | | | | | | 1979 | | 1980 6 | | | | | 10 | | | | 18 1981 | | | | 1981 | | | | 10 | | | | | | | | | | | | 40 | | 19 | | 1988 1 | | | | | | | | | | | |