55% (1996)

62% (1995)

33% (1997)

50% (1995)

72% (1994)

61% (1997)

48% (1996)

56% (1995)

47% (1994)

54% (1996)

74% (1994)

32% (1995)

35% (1995)

50% (1995)

59% (1994)

35% (1996)

45% (1995)

67% (1995)

59% (1999)

64% (1995)