66% (1984)

61% (1967)

64% (1972)

66% (1994)

62% (1966)

64% (1991)

56% (2006)

76% (2018)

73% (1999)

57% (1974)

58% (1992)

62% (1993)

47% (1979)

63% (1988)

71% (1992)

64% (1979)

67% (2009)

58% (1990)

68% (1999)

76% (1945)