55% (2008)

53% (2007)

51% (2007)

59% (2009)

64% (2007)

41% (2005)

54% (2007)

46% (2008)

63% (2007)

53% (2004)

48% (2007)

54% (2008)

64% (2008)

32% (2009)

38% (2007)

55% (2007)

48% (2005)