56% (2002)

52% (2001)

54% (1999)

0% (1998)

60% (1999)

0% (1999)

80% (1998)

57% (1997)

52% (2001)

55% (1997)

55% (1997)

58% (2000)

35% (2000)

49% (1998)

61% (1999)

50% (1999)

63% (1998)

63% (1998)

58% (1999)

45% (1997)