57% (2005)

59% (2006)

59% (2003)

58% (2001)

68% (2005)

51% (2001)

59% (2002)

53% (2006)

58% (2007)

52% (2003)

58% (2005)

67% (2005)

71% (2007)

58% (2007)

52% (2001)

47% (2007)

60% (2004)

63% (2003)

56% (2003)

68% (2005)