75% (2005)

56% (2005)

56% (2004)

71% (2004)

54% (2002)

48% (2003)

52% (2008)

76% (2002)

42% (2004)

32% (2001)

43% (2007)

52% (2009)

64% (2002)

41% (2009)

38% (2001)

43% (2002)

65% (2006)

79% (2007)

64% (2009)

55% (2009)