50% (2003)

57% (2004)

54% (2006)

60% (2004)

46% (2005)

0% (2002)

0% (2006)

10% (2004)

20% (2003)

20% (2002)

0% (2004)

10% (2006)

0% (2002)

0% (2004)

0% (2003)

0% (2006)

0% (2003)

0% (2007)

0% (2005)

60% (2005)