46% (1988)

70% (1986)

62% (1983)

51% (1984)

54% (1988)

45% (1988)

40% (1988)

42% (1987)

62% (1987)

55% (1984)

37% (1987)

53% (1979)

55% (1987)

41% (1986)

43% (1987)

15% (1988)

65% (1987)

54% (1987)

0% (1987)

47% (1991)