69% (1984)

67% (1989)

65% (1969)

81% (1996)

87% (2013)

61% (2016)

56% (1979)

80% (2018)

53% (2015)

71% (1969)

76% (2018)

68% (1968)

54% (2003)

86% (2004)

60% (2013)

58% (2014)

80% (1997)

84% (2005)

78% (2010)

70% (2005)