75% (2006)

69% (2007)

64% (2007)

59% (2004)

57% (2004)

58% (2005)

53% (2001)

61% (1998)

58% (2003)

32% (2006)

90% (2004)

52% (2008)

54% (2001)

0% (2007)

76% (2001)

0% (2002)

0% (1998)

22% (2008)

50% (2002)

40% (2004)