60% (2002)

65% (2009)

64% (2005)

72% (2010)

52% (2004)

38% (2000)

53% (2007)

59% (2010)

76% (2011)

61% (2011)

57% (2005)

54% (2008)

60% (2003)

50% (2001)

50% (2002)

55% (2005)

50% (2007)

53% (2002)

40% (2000)

100% (2007)