| Trends in Any Illicit Use Among Those 12 and Older | |
|---|---|
| Number of Users | Percentage of Population |
 |
 |
| Sources: | National Survey on Drug Use and Health National Household Survey on Drug Abuse |
| Multiple Years | |
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| Trends in Use of Any Illicit Substance Among Those 12 and Older | |||||||
|---|---|---|---|---|---|---|---|
| Ever Used | Past Year | Past Month | |||||
| Year | Pop. 12 or Older | Number | Percent | Number | Percent | Number | Percent |
| 1979 | 180,343,000 | 56,414,000 | 31.3 | 31,785,000 | 17.5 | 25,399,000 | 14.1 |
| 1982 | 186,440,000 | -- | -- | -- | -- | -- | -- |
| 1985 | 192,605,000 | 66,172,000 | 34.4 | 31,488,000 | 16.3 | 23,272,000 | 12.1 |
| 1988 | 198,347,000 | 67,457,000 | 34.0 | 24,577,000 | 12.4 | 15,192,000 | 7.7 |
| 1991 | 202,859,000 | 69,256,000 | 34.1 | 22,216,000 | 11.1 | 13,368,000 | 6.6 |
| 1992 | 205,713,000 | 68,528,000 | 33.3 | 20,046,000 | 9.7 | 12,033,000 | 5.8 |
| 1993 | 207,199,000 | 70,776,000 | 34.2 | 21,402,000 | 10.3 | 12,256,000 | 5.9 |
| 1994 | 209,411,000 | 71,935,000 | 34.4 | 22,663,000 | 10.8 | 12,553,000 | 6.0 |
| 1995 | 211,532,000 | 72,426,000 | 34.2 | 22,662,000 | 10.7 | 12,823,000 | 6.1 |
| 1996 | 214,047,000 | 74,390,000 | 34.8 | 23,182,000 | 10.8 | 13,035,000 | 6.1 |
| 1997 | 216,206,000 | 76,960,000 | 35.6 | 24,189,000 | 11.2 | 13,904,000 | 6.4 |
| 1998 | 218,445,000 | 78,123,000 | 35.8 | 23,115,000 | 10.6 | 13,615,000 | 6.2 |
| 1999 | 221,123,000 | 87,734,000 | 39.7 | 25,402,000 | 11.5 | 13,829,000 | 6.3 |
| 2000 | 223,280,000 | 86,931,000 | 38.9 | 24,535,000 | 11.0 | 14,027,000 | 6.3 |
| 2001 | 225,636,000 | 94,140,000 | 41.7 | 28,409,000 | 12.6 | 15,910,000 | 7.1 |
| 2002 | 235,143,000 | 108,255,000 | 46.0 | 35,132,000 | 14.9 | 19,522,000 | 8.3 |
| 2003 | 237,682,000 | 110,205,000 | 46.4 | 34,993,000 | 14.7 | 19,470,000 | 8.2 |
| 2004 | 240,515,000 | 110,057,000 | 45.8 | 34,807,000 | 14.5 | 19,071,000 | 7.9 |
| 2005 | 243,220,000 | 112,085,000 | 46.1 | 35,041,000 | 14.4 | 19,720,000 | 8.1 |
| 2006 | 246,022,000 | 111,774,000 | 45.4 | 35,775,000 | 14.5 | 20,357,000 | 8.3 |