57% (2008)

69% (2007)

71% (2004)

63% (2004)

62% (2003)

60% (2002)

62% (2011)

70% (2006)

60% (2007)

70% (2013)

80% (2002)

55% (2007)

49% (2000)

72% (2009)

69% (2010)

60% (1999)

62% (2009)

58% (2009)

68% (2012)

65% (2005)