57% (1963)

65% (1992)

78% (1991)

78% (1997)

74% (1985)

73% (1995)

76% (2011)

78% (2012)

72% (2003)

70% (1992)

77% (1997)

78% (2001)

55% (1993)

81% (2012)

68% (2004)

65% (2000)

61% (2017)

78% (2008)

72% (2001)

71% (1993)