80% (1995)

76% (2006)

65% (2000)

62% (2009)

72% (2002)

65% (2006)

71% (2001)

62% (2007)

69% (2013)

65% (1992)

59% (2011)

54% (2000)

58% (2007)

49% (1997)

65% (2007)

62% (2000)

53% (2000)

54% (2010)

59% (2000)

71% (1994)