U.S. Courts: “Extensive information about criminal cases sentenced under the federal sentencing guidelines is contained in the U.S. Sentencing Commission’s 2006 Sourcebook of Federal Sentencing Statistics…In FY 2006, 86.7 percent of all federal offenders were men. The average age of offenders was 34.8 years. Thirty-six percent of all defendants sentenced under the guidelines were convicted of drug offenses…Other common crimes were immigration offenses (24.5 percent), firearms offenses (11.7 percent), fraud (9.7 percent), and non-fraud white collar offenses (4.8 percent).”