74% (1964)

77% (1967)

71% (1972)

61% (1970)

68% (1968)

56% (1975)

62% (1985)

63% (2019)

71% (1993)

65% (1966)

59% (1972)

72% (1989)

61% (2017)

48% (1982)

46% (1980)

50% (1968)

64% (1976)

68% (1969)

66% (1969)

47% (1981)