ocr: ERP Systems nstalled ERP Systems Installed Base Projection by industry Segment 1992-1997 197 140 196 120 d: a 100 a E 80 - - - E 60 92 40 u e - - - - à - t 20 Process Discrete. SOURCE: AMR Treble Growth. From 1992 until 1997, the number of installed ERP systems is predicted to triple, from 41,993 systems to 124,940, according to AMR.