76% (2006)

68% (2015)

62% (2005)

69% (1993)

66% (2014)

65% (1999)

65% (2010)

57% (2005)

57% (1995)

70% (2011)

69% (1993)

63% (2002)

60% (1993)

68% (2008)

68% (1994)

66% (1997)

40% (1997)

69% (1999)

76% (1995)

48% (2002)