43% (1994)

57% (1990)

42% (1996)

46% (1985)

31% (1985)

36% (1996)

41% (1994)

42% (1990)

41% (1985)

10% (1990)

47% (1987)

39% (1994)

39% (1988)

58% (1990)

54% (1995)

53% (1997)

38% (1996)

78% (1995)

20% (1995)