42% (1979)

10% (1997)

0% (1964)

52% (1968)

65% (1962)

58% (1961)

58% (1990)

0% (1953)

55% (1991)

50% (1959)

50% (1965)

40% (1985)

50% (1989)

55% (1981)

50% (1990)

44% (1985)

60% (1970)

0% (1961)

40% (1981)

55% (1978)