Current illicit drug use among youth ages 12 to 17 is continuing to decline, according to this 2007 survey. There have been significant reductions in youth drug use for nearly every type of recreational drug - especially methamphetamine (down 67 percent since 2002) and LSD (down 50 percent since 2002).
SAMHSA officials attribute the decline to anti-drug media campaigns by the Office of National Drug Control Policy that have most recently focused on combating methamphetamine and prescription drug use. Free, 306 pages. (202) 395-6618, http://oas.samhsa.gov/nsduh/2k7nsduh/2k7Results.pdf.