56% (1996)

68% (1992)

62% (1996)

49% (1994)

73% (1994)

36% (1995)

45% (1995)

53% (1999)

29% (1996)

72% (1996)

40% (1993)

50% (1996)

46% (1996)

50% (2001)

49% (1998)

56% (1999)

44% (1997)

38% (1994)

45% (1996)

40% (1995)