Answer: 1991
Notes: The latest devaluation of India's currency occurred in 1991. This was a important event in India's economic history, as it marked a shift from a fixed exchange rate system to a more market-determined rate. The devaluation was part of broader economic reforms initiated due to a balance of payments crisis, leading to liberalization and globalization of the Indian economy. The Indian rupee was devalued by about 18-19% in July 1991.
