| # | Tier | Division | G | W | D | L | GF | GA | Pts | +- | ||
| 2004-05 | English League One | 46 | 12 | 15 | 19 | 54 | 68 | 51 | -14 | |||
| 2005-06 | English League One | 46 | 12 | 14 | 20 | 45 | 66 | 50 | -21 | Relegated | ||
| 2006-07 | English League Two | 46 | 25 | 9 | 12 | 76 | 58 | 84 | 18 | |||
| 2007-08 | English League Two | 46 | 29 | 10 | 7 | 82 | 37 | 97 | 45 | Promoted | ||
| 2008-09 | English League One | 46 | 26 | 9 | 11 | 83 | 47 | 87 | 36 | |||
| 2009-10 | English League One | 46 | 17 | 9 | 20 | 60 | 68 | 60 | -8 | |||
| 2010-11 | English League One | 46 | 23 | 8 | 15 | 67 | 60 | 77 | 7 | |||
| 2011-12 | English League One | 46 | 22 | 14 | 10 | 84 | 47 | 80 | 37 | |||
| 2012-13 | English League One | 46 | 19 | 13 | 14 | 62 | 45 | 70 | 17 | |||
| 2013-14 | English League One | 46 | 17 | 9 | 20 | 63 | 65 | 60 | -2 | |||
| 2014-15 | English League One | 46 | 27 | 10 | 9 | 1 | 44 | 91 | -43 | Promoted | ||
| 2015-16 | English Championship | 46 | 9 | 12 | 25 | 39 | 69 | 39 | -30 | Relegated | ||
| 2016-17 | English League One | 46 | 16 | 13 | 17 | 60 | 58 | 61 | 2 | |||
| 2017-18 | English League One | 46 | 11 | 12 | 23 | 43 | 69 | 45 | -26 | Relegated | ||
| 2018-19 | English League Two | 46 | 23 | 10 | 13 | 71 | 49 | 79 | 22 | Promoted | ||
| 2019-20 | English League One | 35 | 10 | 7 | 18 | 36 | 47 | 37 | -11 | |||
| 2020-21 | English League One | 46 | 18 | 11 | 17 | 64 | 62 | 65 | 2 | |||
| 2021-22 | English League One | 46 | 26 | 11 | 9 | 78 | 44 | 89 | 34 | |||
| 2022-23 | English League One | 46 | 11 | 12 | 23 | 44 | 66 | 45 | -22 | Relegated |