74% (1996)

64% (2000)

65% (2011)

60% (2000)

58% (2001)

71% (2014)

70% (1996)

70% (2007)

76% (2001)

75% (2005)

60% (2003)

65% (1997)

76% (1994)

48% (2013)

59% (2001)

55% (2006)

69% (2007)

67% (2007)

71% (2009)

63% (2007)