Go to the Reports page, click the Progress Summary link at the bottom left of the page. Select Progress Summary from the top of the page, select a time period and an activity type (or any). The page will update and show stats for activities of the specified type for the specified period. You can also get a yearly, monthly and weekly breakdown if you change the report type to one of the Group By options, or you can get a breakdown by activity type by choosing Activity Distribution.
