67% (1993)

66% (1968)

80% (1986)

50% (1998)

83% (2011)

68% (2009)

76% (2001)

73% (1985)

49% (1990)

88% (1985)

80% (2002)

73% (2014)

79% (2006)

73% (1999)

77% (1987)

68% (2009)

72% (1985)

83% (2009)

55% (2005)

81% (2018)