67% (2009)

76% (2002)

79% (2000)

72% (2011)

72% (1998)

78% (2003)

71% (2000)

69% (2005)

70% (2013)

64% (2003)

67% (2006)

59% (1992)

63% (2000)

62% (2009)

50% (2007)

47% (2010)

44% (2005)

53% (2007)

63% (2006)

59% (2023)