73% (1981)

60% (1968)

77% (1970)

77% (1976)

70% (1971)

72% (1970)

72% (1966)

65% (1968)

65% (1974)

69% (1967)

70% (1970)

69% (2023)

61% (1972)

59% (1967)

53% (1971)

60% (1968)

69% (1969)

53% (1982)

60% (1971)

57% (1972)