83% (2018)

68% (1997)

81% (1971)

60% (2005)

65% (1972)

83% (1990)

71% (2006)

76% (1962)

74% (2011)

71% (1996)

75% (1960)

80% (1961)

70% (1957)

77% (1997)

65% (1997)

78% (1985)

79% (2004)

42% (2003)

76% (2009)

50% (1995)