I use the cointracking.info website to track my bitcoin investment. It's a great service but it lacks one very important feature -- it doesn't have the INR currency in their list of fiat currencies. This forces me to convert rupees into dollars to enter my trades.

I  recently contacted the website and requested them to add INR to their list of fiat currencies. In their reply they said they haven't added INR because they don't know of a source where they can get the history of BTC/INR prices.

Does anybody know where they can get this information?

Your help will be appreciated.