Setting up table to report by dates

Need some direction on setting up a table so I can pull data from the last 30 days.

The way I have the table right now is every time print.cfm is viewed it adds 1 to the "views" field in the table. Then I can create charts on that value. I would also like to create a chart on how many times its been viewed for the last 30 days. Any help on directing me how to do this would be great.

Thanks