Help me with the confusion.
In wikipedia, its $2.75 trillions in dollar terms while using current exchange rate, I'm getting it just 2.3 trillions.
Use just one base currency to calculate the GDP and evaluate successive growth in % terms. Measuring it in $ and rupee alternately creates a confusion because the GDP itself is fluctuating and on top of that USD-INR also keeps fluctuating so it's like shooting a moving target from a moving vehicle.
USD - INR was 40 in 2008
USD - INR is 72 in 2018
Then how do you measure your growth if both the currencies have so much divergence?
There is a separate index to keep track of the Indian index in dollar terms, it's known as "S&P BSE Dollex 30 index". It measures Indian markets in USD terms. If you go by USD terms, then there has been no growth in the past 10 years (because the entire relative growth is nullified by the rupee depreciation). If you go by pure rupee terms, then it shows that our market grew 4X from 2008 to 2018. Such is the level of divergence. (Note : Dollex 30 just tracks the stock market, it's not an indicator of the economy. It's just a mathematical example of how divergent your calculations can be if you keep switching between two different currencies, even when you track the GDP.)