80% (1982)

75% (1978)

73% (1974)

69% (1994)

64% (1986)

67% (1967)

68% (1977)

68% (1982)

68% (1978)

67% (1978)

59% (1974)

65% (2011)

66% (1969)

51% (2015)

69% (1980)

70% (1980)

40% (2016)

68% (1971)

63% (1977)

67% (1972)