81% (1982)

70% (1963)

67% (2001)

69% (2001)

80% (1983)

69% (2007)

58% (1968)

54% (1971)

71% (2006)

62% (2012)

59% (2003)

45% (1970)

50% (1959)

72% (1993)

62% (2006)

76% (2011)

78% (1997)

70% (1980)

95% (1967)

70% (2017)