75% (2006)

69% (2011)

58% (2003)

67% (2007)

75% (2002)

70% (2004)

60% (2011)

54% (2009)

66% (2002)

65% (2006)

66% (2002)

63% (2001)

57% (2008)

53% (2003)

57% (2010)

80% (2010)

68% (2007)

41% (2003)

0% (2006)

0% (2007)