73% (2007)

53% (2008)

81% (2009)

56% (2014)

75% (1997)

71% (1991)

59% (2009)

53% (2012)

73% (2001)

74% (2004)

76% (2012)

70% (2009)

66% (2001)

60% (2016)

67% (2009)

75% (2014)

67% (2014)

64% (2012)

77% (2004)

58% (2010)