From: Long term marijuana users seeking medical cannabis in California (2001–2007): demographics, social characteristics, patterns of cannabis and other drug use of 4117 applicants
Before 1945
4.5%
1946–1955
14.6%
1956–1965
17.3%
1966–1975
25.9%
1976–1985
35.1%
After 1986
2.6%