61% (1995)

55% (2015)

61% (2002)

66% (2006)

69% (2012)

100% (2011)

61% (2013)

82% (2003)

74% (2009)

49% (2014)

29% (2009)

80% (1979)

60% (1989)

76% (2002)

84% (2001)

92% (2012)

80% (1986)

82% (1996)

81% (1999)

74% (2010)