United States Sentencing Commission: Interactive Sourcebook of Federal Sentencing Statistics [open html - 16KB]
"The tables and figures available on the ISB [Interactive Sourcebook] are based on the tables and figures available in the Commission's printed 'Sourcebook of Federal Sentencing Statistics (Sourcebook)'. The 'Sourcebook' displays federal sentencing data from the Commission's datafiles. As part of its ongoing mission, the Commission provides Congress, the Judiciary, the Executive branch, and the general public with data extracted and analyzed from sentencing documents submitted by courts to the Commission. Data is reported on an annual basis in the Commission's 'Annual Report and Sourcebook'. Data reported in the 'Sourcebook' is limited to felony and Class A misdemeanor cases for offenders who are convicted and sentenced under the guidelines in the federal court system. The Commission's 'Sourcebook' data does NOT include: state cases, federal petty offenses, federal cases which result in all charges being dismissed or acquitted, federal death penalty cases, federal juvenile cases, or federal witness protection cases. The data available on the ISB includes data on cases with individual offenders, organizational (e.g., corporate) offenders, resentencing and other modifications of sentence, and appeals cases. The tables and figures on the ISB do not contain data concerning probation or supervised release violations. The ISB allows users to re-create tables and information from the Commission's printed 'Sourcebooks' in a number of ways and customize the static tables and figures presented in the printed 'Sourcebook'. Users can choose the data included in the table by selecting one or more particular judicial circuits or districts, and also by selecting a single year of data or multiple years."
United States Sentencing Commission: http://www.ussc.gov/