72% (2010)

69% (2008)

70% (2008)

63% (2008)

62% (2009)

63% (2009)

68% (2008)

60% (2005)

62% (2009)

57% (2009)

69% (2008)

67% (2008)

63% (2008)

64% (2009)

69% (2009)

64% (2010)

66% (2010)

63% (2010)

62% (2008)

61% (2009)