78% (2003)

69% (2005)

60% (2006)

50% (2009)

90% (2004)

20% (1999)

70% (1999)

58% (2000)

55% (2000)

0% (2006)

72% (2001)

53% (2005)

0% (2005)

86% (2006)

55% (2004)

0% (2003)

0% (1997)

85% (2006)

0% (2004)

60% (2005)