70% (1985)

60% (1962)

50% (1986)

30% (1978)

75% (1964)

60% (1976)

70% (1980)

69% (1967)

60% (1978)

50% (1973)

20% (1981)

50% (1961)

0% (1966)

20% (1979)

55% (1976)

39% (1995)

0% (1977)

52% (1978)

59% (1986)

45% (1991)