74% (2016)

62% (2015)

61% (2015)

76% (1999)

70% (2010)

69% (2004)

50% (2003)

73% (2003)

77% (2006)

71% (2000)

78% (1997)

76% (2002)

65% (2010)

74% (2001)

74% (2006)

59% (2009)

66% (2006)

67% (1995)

55% (2005)

64% (2007)