66% (2002)

64% (2010)

73% (2003)

68% (2007)

59% (2004)

55% (2007)

45% (2009)

62% (2009)

42% (2009)

57% (2005)

82% (1999)

50% (2007)

60% (2004)

69% (2003)

57% (2008)

63% (2000)

69% (2002)

65% (2007)

58% (2008)

81% (2006)