51% (2001)

54% (1999)

63% (1998)

56% (2002)

57% (1997)

47% (1998)

59% (1999)

72% (1999)

61% (1999)

60% (1999)

63% (1998)

52% (2001)

60% (1997)

52% (2000)

35% (2000)

58% (1999)

55% (1997)

0% (1998)

0% (1999)

58% (2000)