66% (2012)

57% (1999)

69% (2004)

65% (2008)

69% (2003)

63% (2010)

71% (2000)

75% (2006)

69% (2007)

70% (2009)

75% (2004)

69% (2012)

64% (2005)

71% (2002)

71% (2010)

69% (2007)

42% (2009)

53% (2001)

82% (2012)

71% (2012)