67% (1997)

71% (1999)

52% (2001)

49% (2002)

58% (1997)

51% (2002)

0% (1998)

69% (1999)

41% (2002)

72% (2004)

58% (2000)

60% (2001)

58% (1999)

0% (1998)

10% (1999)

55% (2000)

68% (1997)

62% (1999)

35% (1993)

61% (2001)