71% (1973)

65% (1972)

60% (1972)

65% (1977)

64% (1974)

70% (1973)

65% (1975)

64% (1975)

67% (1973)

0% (1969)

0% (1964)

55% (1965)

0% (1965)

0% (1964)

45% (1982)

57% (1977)

40% (1981)

60% (1970)

0% (1970)

69% (1976)