54% (2006)

57% (2004)

50% (2003)

46% (2005)

47% (2000)

60% (2004)

60% (2005)

20% (2003)

10% (2006)

20% (2002)

10% (2004)

20% (2005)

0% (2007)

0% (2006)

0% (2002)

0% (2006)

0% (2003)

0% (2002)

0% (2003)

0% (2005)