65% (1966)

47% (1990)

48% (1988)

61% (1978)

63% (1969)

58% (1985)

69% (1997)

59% (1987)

46% (1995)

40% (1987)

55% (1970)

50% (1965)

0% (1976)

55% (1957)

58% (1981)

43% (1973)

40% (1970)

81% (1972)

75% (1967)

40% (1978)