46% (1995)

57% (1993)

70% (1994)

67% (1991)

38% (1994)

40% (1992)

55% (1994)

67% (1996)

54% (1991)

50% (1994)

33% (1992)

50% (1994)

53% (1996)

53% (1996)

35% (1994)

60% (1989)

48% (1994)

50% (1991)

45% (1990)

42% (1994)