70% (2007)

67% (2005)

62% (2006)

43% (2006)

55% (2005)

66% (2007)

63% (2010)

60% (2009)

59% (2005)

72% (2005)

66% (2008)

58% (2006)

57% (2006)

67% (2008)

58% (2008)