If you want the best data, go to the source, the Blockchain has great charts ->
https://blockchain.info/chartsTheir analysis spans transaction volume, bitcoin market cap (by volume and value), price history, wallets by user, mining data, etc. There's nearly 30 charts here and most (if not all) are dynamic, meaning you can scroll across the line to find specific data points at a specific point in time.
If you don't find what you want here I'd refer back to the lmgtfy.com link that another person posted...(and Googling is even faster if you don't let some one do it for you!)
Good luck.
