41% (2000)

53% (2001)

52% (1993)

34% (1994)

49% (2000)

34% (1994)

62% (1996)

53% (1999)

30% (1999)

42% (1993)

40% (1998)

60% (1994)

68% (1990)

63% (2000)

38% (1998)

52% (1997)

67% (1996)

46% (1994)

65% (1995)

57% (1998)