74% (1988)

70% (2010)

61% (2011)

73% (2015)

70% (2005)

71% (2011)

80% (2013)

79% (2003)

71% (2005)

74% (2005)

72% (2011)

82% (2010)

67% (2013)

76% (2005)

77% (2008)

70% (2016)

60% (2012)

0% (2003)

69% (2010)

71% (2015)