76% (2011)

70% (2008)

74% (2011)

75% (2008)

79% (2014)

75% (2010)

0% (1990)

74% (1998)

80% (2009)

47% (1979)

83% (2003)

10% (1999)

60% (1997)

40% (2001)

76% (2016)

80% (1973)

55% (1997)

35% (2001)

79% (2002)

78% (2010)