66% (2012)

57% (1999)

65% (2008)

70% (2012)

64% (2010)

75% (2004)

74% (2006)

70% (2004)

70% (2009)

64% (2005)

70% (2003)

66% (2008)

61% (2010)

67% (2007)

70% (2010)

75% (2003)

52% (2001)

72% (2000)

60% (2010)

69% (2007)