0% (2007)

0% (2009)

33% (2001)

35% (2003)

10% (2009)

50% (2005)

20% (2009)

38% (2006)

0% (2004)

42% (2002)

30% (2004)

10% (2006)

48% (2001)

0% (2004)

10% (2002)

42% (2003)

64% (2011)

50% (1997)

33% (2002)

30% (2003)