30% (2007)

40% (2001)

0% (2008)

0% (2000)

0% (2008)

0% (2007)

20% (2003)

70% (2002)

0% (2008)

30% (2009)

0% (2009)

0% (2000)

0% (1993)

15% (2009)

40% (2012)

64% (2012)

60% (1997)

35% (2001)

67% (2010)

84% (2003)