CITIGROUP INC revenue for the last year amounted to 66.06 B CHF, the most of which — 16.15 B CHF — came from its highest performing source at the moment, United States Personal Banking. The greatest contribution to the revenue figure was made by North America — last year it brought CITIGROUP INC 30.87 B CHF, and the year before that — 31.81 B CHF.