72% (2011)

73% (1972)

60% (1992)

75% (2005)

69% (1980)

60% (1979)

64% (1993)

69% (2012)

71% (1999)

82% (1985)

74% (2011)

71% (2004)

78% (2009)

58% (2009)

83% (2011)

65% (2007)

72% (2008)

71% (2015)

78% (2009)

71% (1985)