41% (2006)

63% (2006)

69% (2007)

55% (2005)

58% (2006)

66% (2007)

67% (2005)

60% (2009)

58% (2008)

63% (2010)

59% (2005)

67% (2008)

57% (2006)

66% (2008)

71% (2005)