59% (2009)

73% (2006)

58% (1997)

62% (2009)

56% (2010)

69% (1976)

57% (2007)

55% (2010)

50% (2002)

0% (2010)

52% (2010)

0% (2010)

50% (2001)

0% (2008)

0% (2009)

0% (2008)

60% (2009)