79% (2002)

62% (2002)

71% (2001)

54% (2003)

54% (2003)

63% (2006)

68% (2003)

61% (2005)

72% (2001)

66% (2001)

69% (2008)

56% (2004)

64% (2007)

61% (2008)

53% (2003)

60% (2005)

61% (2008)

68% (2004)

54% (2009)

46% (2003)