51% (1993)

58% (1992)

54% (1994)

27% (1992)

59% (1994)

45% (1991)

47% (1993)

57% (1992)

45% (1992)

39% (1990)

37% (1993)

48% (1992)

40% (1995)

49% (1992)

54% (1995)

42% (1993)

45% (1993)

30% (1990)

35% (1989)

45% (1995)