75% (2001)

68% (2007)

66% (2004)

70% (2002)

57% (2005)

69% (2005)

68% (2007)

71% (2005)

67% (2002)

65% (2005)

63% (2004)

69% (2006)

62% (2009)

61% (2002)

59% (2007)

66% (2006)

58% (2006)

71% (2002)

85% (2009)