60% (1959)

52% (1990)

0% (1986)

42% (1986)

50% (1980)

76% (1978)

65% (1976)

65% (1991)

68% (1972)

63% (1950)

56% (1985)

0% (1978)

43% (1985)

50% (1985)

50% (1958)

50% (2001)

63% (1979)

57% (1969)

20% (2000)

43% (1989)