47% (1995)

57% (1993)

38% (1994)

67% (1991)

53% (1996)

48% (1991)

53% (1995)

70% (1994)

45% (1990)

48% (1989)

54% (1991)

62% (1989)

55% (1994)

42% (1994)

48% (1994)

43% (1991)

40% (1992)

56% (1996)

65% (1996)

0% (1993)