OpenTTD.OpenTTD(master)$ git rev-list --count HEAD --since="Apr 7 2018"  --before="Jan 1 2019"

244

OpenTTD.OpenTTD(master)$ git rev-list --count HEAD --since="Apr 7 2016"  --before="Apr 6 2018"

429

OpenTTD.OpenTTD(master)$ git rev-list --count HEAD --since="Apr 7 2017"  --before="Apr 6 2018"

135