61% (1999)

41% (1996)

60% (1999)

34% (1995)

46% (1997)

29% (1997)

41% (1994)

50% (1995)

43% (1996)

53% (1996)

65% (1993)

52% (1994)

50% (1998)

45% (1998)

45% (1993)

55% (1995)

47% (1998)

50% (1993)

39% (2002)

50% (1992)