This resource is the "Statistics" webpage of the Administrative Office of the U.S. Courts website. "This section of uscourts.gov provides statistical data on the business of the federal Judiciary. Specific publications address the work of the appellate, district, and bankruptcy courts; the probation and pretrial services systems; and other components of the U.S. courts. The links on the left will take you to a summary of the content of each report as well as the current reports and those dating back several years." Links on this page include: "Federal Judicial Caseload Statistics"; "Federal Court Management Statistics"; "Bankruptcy Statistics"; "Judicial Facts and Figures"; "Judicial Business of the U.S. Courts"; "Wiretap Reports"; "Statistical Tables for the Federal Judiciary"; and "Civil Justice Reform Act Report."
Administrative Office of the United States Courts: http://www.uscourts.gov/