66% (2008)

58% (1999)

67% (2012)

70% (2009)

74% (2006)

70% (2004)

64% (2010)

70% (2003)

75% (2004)

65% (2011)

69% (2012)

70% (2007)

70% (2010)

72% (2000)

71% (2012)

61% (2010)

64% (2005)

55% (2004)

42% (2009)

53% (2001)