" In fiscal year 2016, offenders convicted of an offense carrying a drug mandatory minimum penalty were nearly twice as likely to have provided substantial assistance to the government as those not convicted of such an offense (29.8% compared to 15.2%).
" Nearly a quarter of offenders facing a five-year drug mandatory minimum penalty (22.2%) received a substantial assistance reduction, while 36.0 percent of offenders facing a ten-year mandatory minimum penalty and more than half of offenders facing a mandatory minimum penalty of 20 years or more received a substantial assistance reduction (52.3%)."
Source
"Mandatory Minimum Penalties for Drug Offenses in the Federal Criminal Justice System," US Sentencing Commission, October 2017.