Monitoring the Future Study: Trends in Prevalence of Various Substances
Trends in Prevalence of Various Substances for 8th Graders, 10th Graders, and 12th Graders; 2017 – 2020 (in percent)*
https://www.drugabuse.gov/drug-topics/trends-statistics/monitoring-future/monitoring-future-study-trends-in-prevalence-various-drugs