64% (1971)

79% (2002)

80% (1990)

81% (1978)

71% (1993)

82% (2012)

73% (1999)

82% (2015)

74% (2015)

66% (1996)

77% (2017)

79% (1989)

81% (1999)

81% (1975)

83% (1985)

74% (2014)

80% (1990)

70% (2006)

90% (1994)

70% (1990)