[dkpat23.txt, updated 12/07]

Trends in the prevalence of alcohol use among tenth graders: Monitoring
the Future Study, 1991-2006.

------------------------------------------------------------------------
                              Percent Using Alcohol
            ------------------------------------------------------------
Year                                                        5+ in a row
            Lifetime      Annual      30-Day      Daily      past 2 wks
------------------------------------------------------------------------
2006          61.5         55.8        33.8        1.4         21.9

2005          63.2         56.7        33.2        1.3         21.0
2004          64.2         58.2        35.2        1.3         22.0
2003          66.0         59.3        35.4        1.5         22.2
2002          66.9         60.0        35.4        1.8         22.4
2001          70.1         63.5        39.0        1.9         24.9

2000          71.4         65.3        41.0        1.8         26.2
1999          70.6         63.7        40.0        1.9         25.6
1998          69.8         62.7        38.8        1.9         24.3
1997          72.0         65.2        40.1        1.7         25.1
1996          71.8         65.0        40.4        1.6         24.8

1995          70.5         63.5        38.8        1.7         24.0
1994          71.1         63.9        39.2        1.7         23.6
1993[1]       71.6         63.4        38.2        1.8         23.0
1992          82.3         70.2        39.9        1.2         21.1
1991          83.8         72.3        42.8        1.3         22.9

-------------------------------------------------------------------------

Prevalence refers to the proportion or percentage of the sample reporting
use on 1 or more occasions in a given time interval--e.g., lifetime, past
12 months, or past 30 days.  The prevalence of daily use usually refers
to use on 20 or more occasions in the past 30 days.  Five or more in the
past 2 weeks, or "binge drinking," refers to 5 or more drinks in a row
during the prior 2-week interval.

Source: National Institute on Drug Abuse. Johnston, L.D., O'Malley, P.M.,
        Bachman, J.G., and Schulenberg, J.E. (2007), University of Michigan,
        Institute for Social Research, Monitoring the Future National Results
        on Adolescent Drug Use: Overview of Key Findings, 2006. Bethesda, MD:
        NIDA, NIH, Publication No. 07–6202.

        National Institute on Drug Abuse. Johnston, L.D., O'Malley, P.M.,
        Bachman, J.G., and Schulenberg, J.E. (2007), University of Michigan,
        Institute for Social Research, Monitoring the Future National Survey
        Results on Drug Use, 1975-2006 Volume I: Secondary School Students.
        Bethesda, MD: NIDA, NIH, Publication No. 07–6205.

 [1] Split forms, 3 with slight a wording change indicating that "drink" meant
    "more than a few sips," and 3 with the original wording.