Monitoring the Future -- Trends in Lifetime Marijuana Use
vs Alcohol Use by Young Adults (1986 - 2008)

Ratios of Marijuana Use to Alcohol Use Among Young Adults -- Lifetime Use (1986 - 2008)
Year	Ages 19 Use to 28	College Students	12th Grade Students
1986	0.70	0.61	0.56
1987	0.70	0.59	0.54
1988	0.67	0.57	0.51
1989	0.66	0.55	0.48
1990	0.64	0.53	0.45
1991	0.62	0.49	0.42
1992	0.60	0.48	0.37
1993	0.61	0.47	0.44
1994	0.59	0.48	0.48
1995	0.59	0.47	0.52
1996	0.59	0.51	0.57
1997	0.59	0.53	0.61
1998	0.60	0.56	0.60
1999	0.61	0.58	0.62
2000	0.61	0.59	0.61
2001	0.62	0.59	0.61
2002	0.63	0.58	0.61
2003	0.64	0.59	0.60
2004	0.64	0.58	0.60
2005	0.62	0.59	0.61
2006	0.63	0.58	0.61
2007	0.64	0.59	0.60
2008	0.64	0.58	0.60

Other Available Trend and Comparison Data
Click graphics to navigate