I was a computer consultant and developer for about 25 years and though I lived in Canada a big chunk of my business came from the USA. So when tax time rolled around I calculated the value of each month's U.S. earnings by multiplying the U.S. funds received by the exchange rate for that month in order to calculate that month's net income.

Zzzzzzzz. Okay, this isn't the most fascinating topic you've ever read. I hope you can bear with me until I get to the question.

I've been looking 'round the Bitcoin world for a bit and I have yet to find a month-by-month conversion chart so that I could declare Bitcoin earnings (if any) in a rational way. Does a site exist that provides the historical conversion rates in one place? Or do I have to dig deep through the blocks and work it all out for myself?

Thanks.