WEST PHARMACEUTICAL SERVICES INC revenue for the last year amounted to 50.11 B MXN, the most of which — 40.72 B MXN — came from its highest performing source at the moment, Proprietary Products, the year earlier bringing 46.94 B MXN. The greatest contribution to the revenue figure was made by United States — last year it brought WEST PHARMACEUTICAL SERVICES INC 21.04 B MXN, and the year before that — 25.09 B MXN.