76% (2006)

80% (1995)

65% (2000)

65% (2006)

69% (2013)

49% (1997)

71% (2002)

65% (1993)

59% (2000)

61% (2009)

54% (2010)

58% (2007)

60% (1997)

65% (2008)

71% (1994)

63% (1999)

64% (2007)

53% (2015)

71% (2001)

57% (1998)