79% (1963)

75% (1997)

75% (2011)

65% (1964)

75% (1996)

60% (1986)

75% (2002)

79% (2010)

75% (2012)

71% (2002)

75% (2013)

76% (1994)

45% (1997)

72% (2006)

83% (2005)

77% (1984)

80% (2014)

60% (1989)

65% (1978)

76% (2002)