75% (1970)

76% (1978)

66% (1973)

69% (1982)

76% (1961)

48% (1987)

65% (1997)

43% (2001)

73% (1967)

65% (1965)

54% (2018)

62% (2020)

57% (2012)

59% (1980)

77% (1953)

65% (1976)

56% (1980)

61% (2006)

71% (2019)

56% (1979)