78% (1993)

65% (2004)

69% (1996)

74% (2002)

58% (1998)

63% (2008)

65% (1995)

58% (2015)

57% (1997)

48% (2002)

74% (2006)

61% (2014)

56% (1998)

61% (1996)

66% (1997)

64% (2007)

65% (1993)

57% (2000)

72% (2012)

10% (1994)