71% (1984)

70% (2021)

65% (1989)

70% (1972)

70% (1973)

76% (1987)

54% (1985)

50% (1988)

50% (2003)

75% (2009)

69% (2012)

60% (2004)

59% (1997)

62% (1972)

50% (1982)

83% (2012)

100% (1982)

82% (1971)

60% (1997)

65% (1964)