This occasional paper serves as a supplement to one of four annual monographs from the Monitoring the Future (MTF) study, written by the study's investigators and published by the study's sponsor, the National Institute on Drug Abuse. The full 2009 survey results are reported in "Monitoring the Future National Survey Results on Drug Use, 1975-2009: Volume I, Secondary School Students". That monograph contains a description of MTF's design and purposes, as well as extended reporting on substance use of all kinds and a number of related factors such as attitudes and beliefs about drugs, age of initiation, non-continuation of drug use, relevant conditions in the social environment, history of daily marijuana use, and use of drugs for the treatment of ADHD. Appendix D of Volume I contains tabular data on trends in drug use for various demographic subgroups for each of the many drugs under study. The present occasional paper presents those subgroup trends in "graphic" form, because graphic presentations are much easier to comprehend. The graphic presentations have not been included in "Volume I" due both to their length and the cost of printing them in color. Trend data are presented for 12th-grade respondents beginning with 1975, the first year in which a nationally representative sample of high school seniors was surveyed. Trend data for 8th and 10th grades are presented beginning with 1991, when those grade levels were added to the study design. The numerical information upon which these graphics are based is contained in the relevant appendix D tables of Volume I. Detailed definitions of the demographic categories are given in appendix B of that volume. For the reader's convenience, both appendix B and appendix D have also been included in this occasional paper. (Contains 258 figures and 1 footnote.)