69% (2007)

58% (2008)

71% (2004)

73% (2009)

60% (2007)

70% (2006)

63% (2003)

70% (2013)

60% (1999)

62% (2009)

62% (2011)

63% (2004)

69% (2010)

50% (1998)

58% (2009)

49% (2000)

55% (2007)

80% (2002)

60% (2002)

50% (2009)