75% (2006)

56% (2004)

58% (2005)

63% (2007)

56% (2003)

48% (2001)

22% (2008)

59% (2004)

69% (2007)

61% (1998)

31% (2006)

54% (2001)

0% (2007)

90% (2004)

60% (2004)

100% (2000)

76% (2001)

0% (2001)

0% (2002)

40% (2004)