History of India's fiat currency $INR, compared to US Dollar 1983 = 10 ⌛ 8 years 1991 = 20 ⌛ 2 years 1993 = 30 ⌛ 5 years 1998 = 40 ⌛ 10 years 2008 = 50 ⌛ 5 years 2013 = 60 ⌛ 5 years 2018 = 70 ⌛ 4 years 2022 = 80 ⌛ 3 years 2025 = 90