58% (2009)

72% (2006)

57% (2007)

62% (2009)

69% (1976)

50% (2001)

0% (2010)

52% (2010)

55% (2010)

56% (2010)

58% (1997)

0% (2008)

50% (2002)

0% (2009)

0% (2010)

60% (2009)

0% (2008)