66% (2009)

72% (2011)

78% (2003)

76% (2002)

69% (2005)

72% (1998)

70% (2000)

63% (2003)

63% (2000)

70% (2013)

62% (2009)

67% (2006)

59% (1992)

70% (2000)

46% (2010)

43% (2005)

53% (2007)

58% (2004)

50% (2007)

66% (2014)