79% (2002)

66% (2001)

71% (2001)

55% (2003)

72% (2001)

69% (2008)

62% (2002)

55% (2003)

63% (2006)

61% (2005)

61% (2008)

68% (2003)

61% (2008)

64% (2007)

53% (2003)

58% (2008)

60% (2005)

42% (2003)

46% (2003)

69% (2007)