58% (1999)

74% (2006)

66% (2012)

66% (2008)

64% (2010)

70% (2004)

69% (2007)

70% (2009)

69% (2003)

69% (2006)

71% (2000)

75% (2004)

56% (2009)

64% (2006)

53% (2000)

67% (2007)

69% (2007)

71% (2010)

71% (2002)

50% (2006)