56% (1959)

53% (2002)

58% (1955)

45% (1997)

65% (1992)

68% (2018)

73% (2015)

81% (1971)

35% (1989)

60% (1969)

78% (1991)

79% (2004)

65% (1970)

72% (1976)

57% (1963)

64% (2008)

63% (1975)

61% (1987)

52% (1959)

72% (1991)