The United States Sentencing Commission reviewed 321,000 sentencing documents in fiscal year 2018 and outlined several statistics in the annual report:
In fiscal year 2018, the courts reported 69,425 felony and Class A misdemeanor cases to the Commission. This represents an increase of 2,552 cases from the prior fiscal year, and the first increase since fiscal year 2011.
The race of federal offenders remained largely unchanged from prior years. In fiscal year 2018, 54.3 percent of all offenders were Hispanic, 21.2 percent were White, 20.6 percent were Black, and 3.8 percent were of another race. Non-U.S. Citizens accounted for 42.7 percent of all federal offenders.
https://www.ussc.gov/sites/default/files/pdf/research-and-publications/annual-reports-and-sourcebooks/2018/FY18-Annual-Report-and-Sourcebook.pdf