66% (2002)

64% (2010)

68% (2007)

73% (2003)

59% (2004)

45% (2009)

55% (2007)

62% (2009)

42% (2009)

50% (2007)

61% (2007)

63% (2000)

57% (2005)

69% (2003)

82% (1999)

57% (2008)

60% (2004)

69% (2002)

58% (2008)

81% (2006)