65% (2004)

64% (2011)

69% (2009)

70% (2010)

70% (2004)

66% (2009)

66% (2008)

64% (2004)

60% (2011)

63% (2003)

58% (2011)

58% (2005)

59% (2010)

67% (2006)

71% (2010)

74% (2008)

67% (2010)

54% (2012)

54% (2008)

53% (2007)