77% (2008)

83% (2010)

65% (2003)

79% (2003)

70% (2010)

74% (2015)

61% (2011)

0% (1999)

68% (2013)

71% (2005)

74% (1988)

75% (2006)

81% (2011)

76% (2017)

71% (2015)

72% (2006)

72% (2011)

80% (2013)

80% (2008)

78% (2020)