According to the International Monetary Fund (IMF), the Indian economy in 2021 was nominally worth $3.04 trillion; it is the sixth-largest economy by market exchange rates, and is around $10.219 trillion, the third-largest by purchasing power parity (PPP).[297] With its average annual GDP growth rate of 5.8% over the past two decades, and reaching 6.1% during 2011–2012, India is one of the world's fastest-growing economies. However, the country ranks 139th in the world in nominal GDP per capita and 118th in GDP per capita at PPP. Until 1991, all Indian governments followed protectionist policies that were influenced by socialist economics. Widespread state intervention and regulation largely walled the economy off from the outside world. An acute balance of payments crisis in 1991 forced the nation to liberalise its economy; since then it has moved slowly towards a free-market system[302] by emphasising both foreign trade and direct investment inflows. India has been a member of World Trade Organization since 1 January 1995.
The 522-million-worker Indian labour force is the world's second-largest, as of 2017. The service sector makes up 55.6% of GDP, the industrial sector 26.3% and the agricultural sector 18.1%. India's foreign exchange remittances of US$87 billion in 2021, highest in the world, were contributed to its economy by 32 million Indians working in foreign countries.[306] Major agricultural products include: rice, wheat, oilseed, cotton, jute, tea, sugarcane, and potatoes. Major industries include: textiles, telecommunications, chemicals, pharmaceuticals, biotechnology, food processing, steel, transport equipment, cement, mining, petroleum, machinery, and software. In 2006, the share of external trade in India's GDP stood at 24%, up from 6% in 1985.[302] In 2008, India's share of world trade was 1.68%;[307] In 2011, India was the world's tenth-largest importer and the nineteenth-largest exporter. Major exports include: petroleum products, textile goods, jewellery, software, engineering goods, chemicals, and manufactured leather goods. Major imports include: crude oil, machinery, gems, fertiliser, and chemicals. Between 2001 and 2011, the contribution of petrochemical and engineering goods to total exports grew from 14% to 42%. India was the world's second largest textile exporter after China in the 2013 calendar year.