27% (2007)

50% (2004)

34% (2003)

29% (2002)

30% (2008)

75% (2005)

15% (2002)

50% (2007)

40% (2000)

0% (2008)

38% (2006)

66% (2006)

15% (2008)

40% (2006)

32% (2005)

0% (2010)

0% (2012)

35% (2005)

32% (2008)

20% (2004)