If you have the list view selected in the Forms tab of the Portal you can click the “Action Button” and then select "Details".
If you have the grid view selected in the Forms tab of the Portal you can click the “Details Button”.
After selecting the details you will be able to view the details of the form via this screen:
From the form details screen, you can view the historical submission count broken down into weeks, months, 6 months and year. Also viewable is the form history. This includes the submission data, previous versions, and workflow. Lastly, the attached subforms, lists and associated libraries can all be viewed.