The RBI has provided rates that banks used to give for one year deposits, all the way back to 1976. Here’s a plot of the “high” rates today (9.25 to 10%).
Much of the 90s was a 10 to 12% rate, and I remember that many bonds (IDBI etc.) offered 12%-14% to retail buyers.
Call money rates (this is inter-bank borrowing) peaked in the 1991 crisis and have come down substantially since.