79% (1988)

0% (2003)

71% (1968)

56% (1987)

35% (2006)

80% (2013)

85% (2010)

76% (2001)

63% (2005)

73% (2006)

0% (1995)

45% (2013)

78% (2014)

77% (2015)

0% (2012)

78% (2015)

77% (1992)

83% (1990)

82% (2015)

53% (2006)