37% (2006)

48% (2007)

69% (2010)

49% (2008)

47% (2011)

0% (2001)

48% (2008)

47% (2008)

48% (2004)

43% (2010)

56% (2006)

0% (1997)

70% (2012)

60% (2011)

0% (2012)

45% (2007)

50% (2004)

0% (2007)

0% (2008)

42% (2006)