77% (1996)

76% (1991)

67% (1992)

67% (2008)

70% (2015)

72% (2007)

73% (1999)

68% (1998)

78% (1995)

74% (1996)

64% (2008)

80% (1975)

54% (1999)

66% (2014)

61% (1986)

64% (1995)

64% (2020)

64% (2015)

66% (1990)

47% (2004)