"According to the most recent data (2011):
"Any illicit drug use1: almost one in every 6 students aged 15-19 (15.3%) have used an illicit drug at least once in their lifetime. Twice as many male (21.1%) than female students (9.4%) have used drugs in their lifetime. Drug use increases with age: lifetime prevalence increases from 7.4% at the age of 15, to 21.9% and 40.2% at the ages of 18 and 19, respectively. Drug use is significantly higher in the cities of Athens and Thessaloniki (19.3% and 19.4%, respectively) compared to the other areas (12.0%) (Table 2.1).
"Drugs: cannabis (13.4%) and inhalants (14.1%) are the drugs most commonly used by students. Lifetime prevalence of drugs other than cannabis and inhalants was below 3% in 2011. Irrespective of the drugs used, boys use drugs in significantly higher proportions compared to girls (Table 2.1).
"Recent and current use
"Data on recent (i.e., use in the last 12 months) -and current use (i.e., use in the last 30 days) is available only for cannabis. In 2011, one in every 10 students aged 15-19 (10.4%) reported recent - and one in every 16 (6.3%) current use of cannabis. The male to female ratio was 2 to 1 for current use (14.3% and 6.4%, respectively), and 3 to 1 for current use (9.1% and 3.3%, respectively). Recent and current use increases significantly by age. Finally, twice as many students in Athens and Thessaloniki than students in other areas report recent and current use (Table 2.2)."

Source

University Mental Health Research Institute, "2012 National Report (2011 Data) to the EMCDDA by the Reitox National Focal Point: Greece: New Development, Trends and in-depth information on selected issues" (Athens, Greece: UMHRI, 2012), p. 30.
http://www.emcdda.europa.eu/h…
http://www.emcdda.europa.eu/a…