PERSISTENT SYSTEMS LTD revenue for the last year amounted to 98.22 B INR, the most of which — 45.95 B INR — came from its highest performing source at the moment, Software, Hi-Tech and Emerging Industries, the year earlier bringing 40.11 B INR. The greatest contribution to the revenue figure was made by North America — last year it brought PERSISTENT SYSTEMS LTD 77.09 B INR, and the year before that — 65.11 B INR.