Time series analysis?

Hello All,

I am new to trading, and I've made an account with etrade, and reading up a lot of things on asx and other websites

One thing which I am looking for but I can't find is a website which provides a time series of important ratios (P/E, P/B, working capital, ROE, ROA etc) for a few years in a row for blue chip firms. Can anybody point me towards the right direction?

Thanks.