80% (1995)

76% (2006)

65% (2000)

66% (2006)

49% (1997)

69% (2013)

72% (2002)

59% (2000)

65% (1993)

62% (2009)

54% (2015)

60% (1997)

54% (2010)

58% (2007)

71% (2001)

59% (2011)

65% (1992)

54% (2000)

65% (2008)

72% (1994)