74% (1997)

72% (1997)

72% (1995)

68% (2013)

78% (1993)

79% (2015)

67% (1994)

63% (1989)

66% (1997)

72% (1989)

65% (2016)

78% (2001)

70% (2017)

68% (1988)

67% (1989)

75% (1989)

59% (2009)

70% (2011)

76% (2011)

66% (1992)