This occasional paper is intended to serve as a supplement to the larger annual volume, "Monitoring the Future National Survey Results on Drug Use, 1975-2006: Volume I: Secondary School Students." This supplement contains the graphic presentation of the trends in drug use for various demographic subgroups, namely those defined by gender, college plans, region of the country, population density, education level of the parents, and racial and ethnic identification. It presents trend data for 12th-grade respondents from 1975, the first year nationally representative samples of high school seniors were obtained. Data are also presented on 8th- and 10th-grade students from 1991, the first year they were added. Two appendixes from the larger volume are included for the convenience of the reader. Appendix D contains the numerical information upon which these graphs are based. Appendix B contains detailed information of the demographic categories being used. (Contains 108 tables and 252 figures.) [For "Monitoring the Future Occasional Paper Paper 66," see ED508289. For "Monitoring the Future: National Survey Results on Drug Use, 1975-2006: Volume I: Secondary School Students," see ED498428.]