76% (2006)

61% (2009)

72% (2002)

66% (2006)

54% (2015)

69% (2013)

59% (2011)

65% (2007)

63% (2007)

65% (1993)

53% (2000)

71% (1994)

49% (1997)

60% (2005)

59% (2000)

62% (2000)

58% (2007)

61% (2008)

54% (2010)

61% (1997)