"In line with a number of other studies, the 2013 survey shows that cannabis is by far the most common illegal drug in Norway. As shown in Figure 2, the LTP rate for cannabis use among all adults was 23.3 per cent, while the LYP rate was 5.1 per cent. By comparison, the LTP rate was estimated to be 4.2 per cent for cocaine, 3.7 per cent for amphetamines, 2.3 per cent for ecstasy, 1.5 per cent for LSD, 1.1 per cent for GHB/GBL and 0.7 per cent for heroin for all adults (Figure 3). The LYP rate was estimated to be less than one per cent for cocaine, amphetamines and ecstasy.

"Between 2007 and 2012 in the set of the Portuguese population there was a general decrease in lifetime prevalence⁶ (any illicit drug from 12% to 9.5%) and recent use (any illicit drug from 3.7% to 2.7%), with the exception of ecstasy and LSD, whose lifetime prevalence remained the same and LSD use in last 12 months increased slightly.

"The most recent general population survey shows that cannabis remains the most frequently used illicit substance in Portugal, followed by MDMA/ecstasy and cocaine. Use of illicit substances is more common among young adults (aged 15-34 years). The available data indicate an increase in last year and last month cannabis use during the period 2012-16, mainly among those aged between 25 and 44 years.

"Among people aged 12 or older in 2019, 60.1 percent (or 165.4 million people) used a substance (i.e., tobacco, alcohol, kratom, or an illicit drug) in the past month. In particular, 50.8 percent (or 139.7 million people) drank alcohol in the past month, 21.1 percent (or 58.1 million people) used a tobacco product in the past month, and 13.0 percent (or 35.8 million people) used an illicit drug in the past month. In addition, 0.3 percent (or 825,000 people) used kratom in the past month."

"• Among people aged 12 or older, the percentage who were past year marijuana users increased from 11.0 percent (or 25.8 million people) in 2002 to 17.5 percent (or 48.2 million people) in 2019. Over this same period, the percentage who were past year cocaine users decreased
from 2.5 percent (or 5.9 million people) to 2.0 percent (or 5.5 million people).

Data Table of Estimated 30-Day Prevalence of Use of Various Drugs for Young People in the US in Grades 8, 10, and 12 Combined, 1998 through 2016, According to the Monitoring The Future Survey