76% (2006)

68% (2015)

62% (2005)

67% (2014)

70% (1993)

70% (2011)

57% (2005)

57% (1995)

66% (2010)

68% (1994)

68% (2008)

69% (1993)

62% (2002)

65% (2003)

61% (1993)

76% (1995)

67% (1997)

71% (1999)

40% (1997)

50% (1994)