51% (2002)

47% (2002)

66% (2001)

52% (1999)

42% (2003)

44% (2000)

51% (2000)

39% (2001)

40% (1999)

42% (1998)

40% (2000)

28% (2003)

52% (1998)

50% (2000)

58% (1996)

30% (2003)

42% (1999)