44% (1994)

46% (1985)

36% (1996)

57% (1990)

54% (1995)

43% (1990)

48% (1987)

54% (1990)

45% (1985)

31% (1985)

35% (1996)

42% (1988)

42% (1996)

39% (1994)

41% (1994)

48% (1997)

15% (1995)

10% (1990)

74% (1995)