80% (1982)

47% (1976)

61% (1983)

69% (1967)

67% (1966)

52% (1994)

75% (1978)

56% (1976)

60% (1966)

68% (1972)

68% (1978)

73% (1974)

62% (1984)

68% (1978)

64% (1986)

67% (1983)

65% (1997)

54% (1978)

73% (1979)

70% (1994)