76% (2001)

79% (2004)

71% (2002)

70% (1990)

55% (1999)

85% (1998)

67% (1997)

74% (1979)

69% (2012)

76% (1994)

73% (2008)

77% (2020)

68% (2009)

73% (2012)

64% (2013)

45% (2010)

72% (1998)

69% (1988)

80% (2008)

82% (2013)