59% (1987)

49% (1987)

48% (1986)

40% (1987)

50% (1985)

46% (1987)

54% (1999)

59% (1985)

54% (1981)

61% (1988)

59% (1985)

55% (1984)

39% (1986)

55% (1985)

45% (1979)

42% (1987)

38% (1985)

63% (1987)

50% (1987)

52% (1984)