The ORR have published the station usage estimates for 2016-17.
http://orr.gov.uk/statistics/published-stats/station-usage-estimates
Estimates for Barton Line stations are as follows:
Barrow Haven 1526 (down from 1604 - 4.86%)
Barton 39724 (up from 37486 - 5.97%)
Cleethorpes 288094 (up from 259844 - 10.87%)
Goxhill 13334 (up from 13178 - 1.18%)
Great Coates 10354 (up from 9390- 10.27%)
Grimsby Docks 4574 (up from 4060 - 12.66%)
Grimsby Town 438050 plus 10518 interchanges (up from 422136 - 3.77%)
Habrough 33724 plus 115 interchanges (up from 30098 - 12.05%)
Healing 9822 (down from 10626 - 7.57%)
New Clee 1286 (up from 458 - 180.79%)
New Holland 14996 (up from 14708 - 1.96%)
Stallingborough 10602 (up from 10588 - 0.13%)
Thornton Abbey 1040 (down from 1342 - 22.50%)
Ulceby 6598 (down from 6808 - 3.08%)
The ORR have published the estimates of station usage for 2017-18.
http://orr.gov.uk/statistics/published-stats/station-usage-estimates
Barton 39488 (down 0.7%) 1514 season ticket uses
Barrow Haven 1432 (down 6.2%)
New Holland 14254 (down 4.9%) 872 season ticket uses
Goxhill 14362 (up 7.7%) 1588 season ticket uses
Thornton Abbey 1042 (up 0.2%) 226 season ticket uses
Ulceby 7872 (up 19.3%) 956 season ticket uses
Habrough 33412 (-0.9%) 2782 season ticket uses, 32 interchanges
Stallingborough 10112 (down 4.6%) 482 season ticket uses
Healing 8820 (down 10.2%)
Great Coates 11144 (up 7.6%) 792 season ticket uses
Grimsby Town 454166 (up 3.7%) 18526 season ticket uses, 10834 interchanges
Grimsby Docks 4502 (down 1.6%) 2018 season ticket uses
New Clee 1236 (down 3.9%) 20 season ticket uses
Cleethorpes 285412 (down 0.9%) 4790 season ticket uses