58% (1999)

66% (2012)

75% (2006)

66% (2008)

69% (2004)

69% (2003)

75% (2004)

71% (2000)

71% (2009)

52% (2001)

63% (2010)

71% (2002)

70% (2007)

55% (2004)

71% (2005)

69% (2007)

60% (2011)

64% (2006)

67% (2007)

82% (2002)