78% (1993)

65% (2004)

69% (1996)

74% (2002)

64% (1995)

63% (2008)

58% (1998)

58% (2015)

49% (2002)

60% (1997)

66% (1997)

65% (1993)

74% (2006)

57% (2000)

61% (2014)

72% (2012)

57% (1998)

61% (1996)

70% (2010)

64% (2007)