| # | Tier | Division | G | W | D | L | GF | GA | Pts | +- | ||
| 1978-79 | English Division Four | 46 | 21 | 13 | 12 | 63 | 48 | 55 | 15 | |||
| 1979-80 | English Division Four | 46 | 21 | 13 | 12 | 76 | 61 | 55 | 15 | |||
| 1980-81 | English Division Four | 46 | 18 | 11 | 17 | 51 | 55 | 47 | -4 | |||
| 1981-82 | English Division Four | 46 | 26 | 13 | 7 | 80 | 46 | 91 | 34 | Promoted | ||
| 1982-83 | English Division Three | 46 | 15 | 9 | 22 | 60 | 72 | 54 | -12 | |||
| 1983-84 | English Division Three | 46 | 16 | 13 | 17 | 46 | 56 | 61 | -10 | |||
| 1984-85 | English Division Three | 46 | 15 | 14 | 17 | 60 | 64 | 59 | -4 | |||
| 1985-86 | English Division Three | 46 | 23 | 14 | 9 | 82 | 48 | 83 | 34 | |||
| 1986-87 | English Division Three | 46 | 25 | 10 | 11 | 83 | 60 | 85 | 23 | |||
| 1987-88 | English Division Three | 46 | 20 | 12 | 14 | 70 | 61 | 72 | 9 | |||
| 1988-89 | English Division Three | 46 | 14 | 14 | 18 | 55 | 53 | 56 | 2 | |||
| 1989-90 | English Division Three | 46 | 13 | 14 | 19 | 48 | 64 | 53 | -16 | |||
| 1990-91 | English Division Three | 46 | 20 | 9 | 17 | 71 | 54 | 69 | 17 | |||
| 1991-92 | English Division Three | 46 | 15 | 14 | 17 | 58 | 64 | 59 | -6 | |||
| 1992-93 | English League One | 46 | 10 | 11 | 25 | 43 | 72 | 41 | -29 | Relegated | ||
| 1993-94 | English League Two | 42 | 11 | 12 | 19 | 51 | 70 | 45 | -19 | |||
| 1994-95 | English League Two | 42 | 14 | 10 | 18 | 53 | 60 | 52 | -7 | |||
| 1995-96 | English League Two | 46 | 20 | 10 | 16 | 62 | 56 | 70 | 6 | |||
| 1996-97 | English League Two | 46 | 26 | 9 | 11 | 84 | 51 | 87 | 33 | Promoted | ||
| 1997-98 | English League One | 46 | 17 | 11 | 18 | 64 | 66 | 62 | -2 | |||
| 1998-99 | English League One | 46 | 22 | 10 | 14 | 75 | 48 | 76 | 27 | |||
| 1999-00 | English League One | 46 | 22 | 17 | 7 | 72 | 38 | 83 | 34 | |||
| 2000-01 | English League One | 46 | 19 | 18 | 9 | 53 | 42 | 75 | 11 | |||
| 2001-02 | English League One | 46 | 16 | 16 | 14 | 66 | 51 | 64 | 15 | |||
| 2002-03 | English League One | 46 | 29 | 13 | 4 | 68 | 25 | 100 | 43 | Promoted | ||
| 2003-04 | English Championship | 46 | 18 | 17 | 11 | 60 | 45 | 71 | 15 | |||
| 2004-05 | English Championship | 46 | 25 | 12 | 9 | 79 | 35 | 87 | 44 | Promoted | ||
| 2005-06 | English Premiership English Premier League | 38 | 15 | 6 | 17 | 45 | 52 | 51 | -7 | |||
| 2006-07 | English Premiership English Premier League | 38 | 10 | 8 | 20 | 37 | 59 | 38 | -22 | |||
| 2007-08 | English Premiership English Premier League | 38 | 10 | 10 | 18 | 34 | 51 | 40 | -17 | |||
| 2008-09 | English Premiership English Premier League | 38 | 12 | 9 | 17 | 34 | 45 | 45 | -11 | |||
| 2009-10 | English Premiership English Premier League | 38 | 9 | 9 | 20 | 37 | 79 | 36 | -42 | |||
| 2010-11 | English Premiership English Premier League | 38 | 9 | 15 | 14 | 40 | 61 | 42 | -21 | |||
| 2011-12 | English Premiership English Premier League | 38 | 11 | 10 | 17 | 42 | 62 | 43 | -20 | |||
| 2012-13 | English Premiership English Premier League | 38 | 9 | 9 | 20 | 47 | 73 | 36 | -26 | Relegated | ||
| 2013-14 | English Championship | 46 | 21 | 10 | 15 | 61 | 48 | 73 | 13 | |||
| 2014-15 | English Championship | 46 | 9 | 12 | 25 | 39 | 64 | 39 | -25 | Relegated | ||
| 2015-16 | English League One | 46 | 24 | 15 | 7 | 82 | 45 | 87 | 37 | Promoted | ||
| 2016-17 | English Championship | 46 | 10 | 12 | 24 | 40 | 57 | 42 | -17 | Relegated | ||
| 2017-18 | English League One | 46 | 29 | 11 | 6 | 89 | 29 | 98 | 60 | Promoted | ||
| 2018-19 | English Championship | 46 | 13 | 13 | 20 | 51 | 64 | 52 | -13 | |||
| 2019-20 | English Championship | 46 | 15 | 14 | 17 | 57 | 56 | 47 | 1 | Relegated | ||
| 2020-21 | English League One | 46 | 13 | 9 | 24 | 54 | 77 | 48 | -23 | |||
| 2021-22 | English League One | 46 | 27 | 11 | 8 | 82 | 44 | 92 | 38 | Promoted | ||
| 2022-23 | English Championship | 46 | 10 | 15 | 21 | 38 | 65 | 39 | -27 | Relegated |