80% (2010)

72% (2001)

76% (2013)

75% (2011)

78% (1998)

66% (2007)

71% (1993)

71% (2012)

77% (2008)

69% (2010)

86% (2005)

71% (2006)

69% (2014)

71% (1990)

71% (2008)

77% (2009)

70% (2015)

75% (2014)

74% (2004)

30% (2001)