65% (2004)

62% (2005)

75% (2003)

63% (2003)

59% (2010)

75% (2007)

52% (2011)

54% (2012)

67% (2010)

72% (2004)

64% (2008)

72% (2009)

51% (2001)

74% (2008)

59% (2011)

54% (2008)

70% (2010)

64% (2004)

71% (2004)

50% (2006)