67% (1983)

67% (1970)

35% (1973)

61% (1981)

48% (1980)

62% (1971)

70% (1978)

56% (1964)

63% (1977)

58% (1967)

75% (1995)

64% (1983)

53% (1974)

10% (1985)

0% (1975)

40% (1977)

64% (1967)

57% (1972)

60% (1973)

55% (1975)