47% (1995)

48% (1991)

38% (1994)

53% (1995)

68% (1991)

58% (1993)

48% (1994)

52% (1994)

70% (1994)

55% (1994)

45% (1990)

60% (1992)

40% (1992)

54% (1991)

50% (1994)

53% (1996)

35% (1994)

43% (1991)

42% (1994)

36% (1992)