75% (2001)

66% (2004)

68% (2007)

69% (2002)

57% (2005)

68% (2007)

69% (2005)

59% (2007)

68% (2002)

71% (2005)

65% (2005)

69% (2006)

70% (2002)

66% (2006)

61% (2009)

58% (2006)

62% (2004)

61% (2005)

61% (2002)

85% (2009)