BTS RAIL MASS TRANSIT GROWTH IF revenue for the last year amounted to 3.46 B THB, the most of which — 3.46 B THB — came from its highest performing source at the moment, Investment and Related Activities, the year earlier bringing 945.02 M THB. The greatest contribution to the revenue figure was made by Thailand — last year it brought BTS RAIL MASS TRANSIT GROWTH IF 3.46 B THB, and the year before that — 945.02 M THB.