[dkpatx1.txt, updated 12/07]

Trends in the prevalence of reporting as having been drunk among
twelfth graders: Monitoring the Future Study, 1991-2006.

--------------------------------------------------------------------
                                 Been Drunk
Year         --------------------------------------------------

                 Lifetime      Annual      30-Day      Daily
--------------------------------------------------------------------
2006              56.4          47.9        30.0        1.6

2005              57.5          47.7        30.2        1.5
2004              60.3          51.8        32.5        1.8
2003              58.1          48.0        30.9        1.6
2002              61.6          50.4        30.3        1.2
2001              63.9          53.2        32.7        1.4

2000              62.3          51.8        32.3        1.7
1999              62.3          53.2        32.9        1.9
1998              62.4          52.0        32.9        1.5
1997              64.2          53.2        34.2        2.0
1996              61.8          51.9        31.3        1.6

1995              63.2          52.5        33.2        1.3
1994              62.9          51.7        30.8        1.2
1993              62.5          49.6        28.9        0.9
1992              63.4          50.3        29.9        0.8
1991              65.4          52.7        31.6        0.9

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Prevalence refers to the proportion or percentage of the sample
reporting having been drunk on 1 or more occasions in a given time
interval--e.g., lifetime, past 12 months, or past 30 days.  Daily
usually refers to 20 or more occasions in the past 30 days.

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.