I calculate that just six players have reached 20 goals in a season since 1990/91:-
Jimmy Quinn (35) & Stuart Lovell (20) - 93/94
Trevor Morley (22) - 96/97
Jamie Cureton (26) & Martin Butler (24) - 00/01
Shane Long (21) - 10/11
Figures may not be perfect and if not should be within one goal (I've only listed those that scored more than once in a season):-
90/91 - Trevor Senior (15), Craig Maskell (10), Steve Moran (10), Mick Gooding (7), Keith McPherson (3), Danny Bailey (2), Tom Jones (2), Stuart Lovell (2)
91/92 - Craig Maskell (16), Trevor Senior (7), Mark McGhee (5), David Lee (5), Stuart Lovell (4), Adrian Williams (4), Kevin Dillon (3), Mick Gooding (3), Scott Taylor (2)
92/93 - Jimmy Quinn (17), Michael Gilkes (12), Stuart Lovell (8), Scott Taylor (5), Phil Parkinson (4), Adrian Williams (4), Mick Gooding (3), Andy Gray (3), James Lambert (3), Mark McGhee (2)
93/94 - Jimmy Quinn (35), Stuart Lovell (20), Mick Gooding (7), Scott Taylor (6), Phil Parkinson (3), Michael Gilkes (2), Uwe Hartenberger (2), Jeff Hopkins (2), Dylan Kerr (2)
94/95 - Stuart Lovell (13), Lee Nogan (10), Michael Gilkes (8), Scott Taylor (7), Simon Osborn (4), Jimmy Quinn (4), Paul Holsgrove (3), Uwe Hartenberger (2), Adrian Williams (2)
95/96 - Jimmy Quinn (11), Lee Nogan (10), Stuart Lovell (7), James Lambert (4), Trevor Morley (4), Mick Gooding (3), Adrian Williams (3), Andy Bernal (2), Darren Caskey (2), Dylan Kerr (2)
96/97 - Trevor Morley (22), Lee Nogan (6), Stuart Lovell (5), James Lambert (4), Martin Williams (3), Jimmy Quinn (3), Paul Holsgrove (2), Barry Hunter (2), Keith McPherson (2)
97/98 - Carl Asaba (8), Martin Williams (6), Lee Hodges (5), Trevor Morley (4), James Lambert (3)
98/99 - Martin Williams (11), Grant Brebner (9), Jim McIntyre (7), Darren Caskey (6), Phil Parkinson (5), Mass Sarr (3), Stuart Gray (2), Mark McKeever (2), Keith Scott (2)
99/00 - Darren Caskey (17), Nicky Forster (10), Martin Williams (5), Martin Butler (4), Jim McIntyre (4), Keith Scott (3), Andy Gurney (2), Lee Hodges (2)
00/01 - Jamie Cureton (26), Martin Butler (24), Darren Caskey (9), Sammy Igoe (6), Jim McIntyre (4), Phil Parkinson (4), Lee Hodges (2), Tony Rougier (2), Adrian Viveash (2)
01/02 - Nicky Forster (18), Jamie Cureton (15), Darius Henderson (8), Andy Hughes (6), John Salako (6), Martin Butler (2), John Mackie (2), Phil Parkinson (2), Alex Smith (2)
02/03 - Nicky Forster (16), Andy Hughes (9), Jamie Cureton (8), Darius Henderson (4), John Salako (4), Tony Rougier (3), Martin Butler (2), James Harper (2), NIcky Shorey (2), Steve Sidwell (2)
03/04 - Shaun Goater (12), Nicky Forster (8), Steve Sidwell (8), Dave Kitson (5), Scott Murray (5), Lloyd Owusu (4), Andy Hughes (3), John Salako (3), Nicky Shorey (2)
04/05 - Dave Kitson (19), Nicky Forster (7), Lloyd Owusu (6), Steve Sidwell (5), James Harper (3), Ivar Ingimarsson (3), Nicky Shorey (3), Dean Morgan (2)
05/06 - Kevin Doyle (18), Dave Kitson (18), Leroy Lita (11), Steve Sidwell (10), Bobby Convey (7), James Harper (7), Glen Little (5), Brynjar Gunnarsson (4), Shane Long (3), Ibrahima Sonko (3), Stephen Hunt (2), Ivar Ingimarsson (2), Nicky Shorey (2)
06/07 - Kevin Doyle (13), Leroy Lita (7), Stephen Hunt (4), Seol ki-Hyeun (4), Steve Sidwell (4), Brynjar Gunnarsson (3), James Harper (3), Ivar Ingimarsson (2), Dave Kitson (2), Shane Long (2)
07/08 - Dave Kitson (10), Kevin Doyle (6), James Harper (6), Stephen Hunt (5), Andre Bikey (3), Shane Long (3), Ivar Ingimarsson (2), Nicky Shorey (2)
08/09 - Kevin Doyle (18), Noel Hunt (11), Shane Long (9), Stephen Hunt (6), Kalifa Cisse (5), Andre Bikey (3), Ibrahima Sonko (3), Brynjar Gunnarsson (2), Jimmy Kebe (2), Dave Kitson (2)
09/10 - Gylfi Sigurdsson (16), Simon Church (10), Jimmy Kebe (10), Gregorz Rasiak (9), Shane Long (6), Alex Pearce (4), Jobi McAnuff (3), Brian Howard (2), Noel Hunt (2), Matthew Mills (2)
10/11 - Shane Long (21), Ian Harte (11), Noel Hunt (10), Jimmy Kebe (9), Simon Church (5), Hal Robson-Kanu (5), Jobi McAnuff (4), Jem Karacan (3), Mathieu Manset (2), Matthew Mills (2), Gylfi Sigurdsson (2)
11/12 - Adam Le Fondre (12), Noel Hunt (8), Simon Church (7), Jason Roberts (6), Mikele Leigertwood (5), Jobi McAnuff (5), Alex Pearce (5), Ian Harte (4), Hal Robson-Kanu (4), Kaspars Gorkks (3), Jem Karacan (3), Jimmy Kebe (3), Mathieu Manset (3)
12/13 - Adam Le Fondre (11), Hal Robson-Kanu (7), Jimmy Kebe (5), Pavel Pogrebnyak (5), Garath McCleary (3), Noel Hunt (2), Sean Morrison (2)
13/14 - Adam Le Fondre (15), Pavel Pogrebnyak (13), Garath McCleary (5), Nick Blackman (4), Danny Guthrie (4), Hal Robson-Kanu (4), Kaspars Gorkks (3), Alex Pearce (3), Danny Williams (3), Royston Drenthe (2), Jem Karacan (2), Jobi McAnuff (2), Billy Sharp (2)
14/15 - Simon Cox (8), Glenn Murray (8), Pavel Pogrebnyak (6), Jamie Mackie (5), Nick Blackman (3), Michael Hector (3), Jake Cooper (2), Jake Taylor (2)
15/16 - Nick Blackman (11), Orlando Sa (5), Danny Williams (5), Ola John (4), Garath McCleary (4), Yann Kermogant (3), Oliver Norwood (3), Lucas Piazon (3), Deniss Rakels (3), Hal Robson-Kanu (3), Matej Vydra (3), Jake Cooper (2)
16/17 - Yann Kermogant (16), Garath McCleary (9), John Swift (8), Roy Beerens (6), Danny Williams (4), Paul McShane (3), George Evans (2), Lewis Grabban (2), Joseph Mendes (2), Dominic Samuel (2)