Article: New Delhi is the largest commercial city in northern India. It has an estimated net State Domestic Product (FY 2010) of ₹1595 billion (US$23 billion) in nominal terms and ~₹6800 billion (US$100 billion) in PPP terms. As of 2013, the per capita income of Delhi was Rs. 230000, second highest in India after Goa. GSDP in Delhi at the current prices for 2012-13 is estimated at Rs 3.88 trillion (short scale) against Rs 3.11 trillion (short scale) in 2011-12.

Now answer this question: What was the estimated net State Domestic Product of New Delhi for 2010?
₹1595 billion