48% (2013)

56% (1996)

64% (2000)

56% (2000)

58% (2001)

38% (2005)

74% (1996)

60% (2003)

76% (2001)

62% (2005)

71% (2014)

71% (1996)

55% (2006)

75% (2005)

54% (2010)

65% (1997)

63% (2014)

58% (2001)

65% (2011)

53% (2008)