61% (2003)

62% (1999)

56% (2012)

72% (2004)

58% (2007)

45% (2013)

73% (2010)

75% (2012)

67% (2013)

63% (2007)

69% (2008)

65% (2013)

50% (2014)

62% (2011)

63% (1985)

68% (2011)

58% (2008)

44% (2000)

53% (2002)

62% (2001)