History Report
The History Report allows you to view how the numbers of different configuration objects (such as Projects or Workflows) has changed over time.
Filtering
The History Report has a variety of filtering options for the data.
You can select the range of dates that you want to see information for, choosing from preset options or manually selecting a custom date range.
You can also filter by what types of Jira configuration object that you want to see data for.
Exporting
The History Report can be exported in either CSV or PDF format. The export can be customized according to the currently selected filters and view.
You can find more information about exporting reports here.