Use the Report Manager. If you only care about numbers, use the WTPartMaster as the table to search. Then select all the fields you need. If you require additional attributes (IBAs), us WTPart. Link it to the context (ie: library) you want to use if you need it narrowed down by library. Library name can also be used as an input parameter so you can go library by library. Once you run the query, you can always save the URL generated to return to that same query at any time. Or import the results as a web query into an excel to see the results in a spreadsheet.