51% (2002)

51% (2001)

71% (1999)

47% (1998)

76% (1997)

20% (2000)

0% (2000)

66% (2001)

50% (1999)

55% (2000)

79% (2000)

71% (1999)

25% (2001)

44% (2002)

60% (2001)

0% (2003)