70% (2007)

58% (2003)

82% (2009)

70% (2007)

45% (2010)

47% (2006)

42% (2006)

69% (2006)

70% (2011)

62% (2005)

60% (2008)

66% (2006)

56% (2007)

57% (2005)

69% (2009)

58% (2010)

66% (2007)

48% (2004)

67% (2006)

66% (2011)