Getting information from Yahoo! finance

I'm trying to get data about currency exchange from Yahoo! finance in the csv format.

E.g. there is a lot of information in this page, but when I'm downloading csv file over the url there is no such data as Change, Bid, 开发者_JAVA技巧Ask, Prev Close, Open, etc. There is "N/A" values instead them.

How can I get complete information from relevant page?

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I suggest that you use Yql. This thread provides an example: Help creating a YQL Query to search companies