Source: Drug Abuse Warning Network (2003 Update)
| DAWN Drug Mentions: Drug Use Motive (Percents) | |||||
|---|---|---|---|---|---|
| Year | Dependence | Suicide | Psychic Effects | Unknown | Other |
| 1995 | 63.9 | 8.9 | 17.3 | 9.6 | 0.3 |
| 1996 | 62.4 | 8.6 | 18.9 | 9.7 | 0.4 |
| 1997 | 61.6 | 9.0 | 19.0 | 10.1 | 0.4 |
| 1998 | 61.3 | 9.1 | 17.7 | 11.6 | 0.3 |
| 1999 | 58.8 | 9.0 | 19.4 | 12.5 | 0.3 |
| 2000 | 59.1 | 9.1 | 19.6 | 11.8 | 0.3 |
| 2001 | 56.4 | 8.9 | 20.1 | 14.2 | 0.4 |
| 2002 | 54.5 | 9.6 | 17.2 | 18.4 | 0.4 |