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National Drug Control Strategy
Update 2003

February 2003

Table 2. Percentages Reporting Use of Selected Illegal Drugs, 1979–2001

Year
Ages 12 and older
Adolescent (Ages 12–17)
Current use of any illicit drug 1
Current cocaine use2
Occasional cocaine use3
Current marijuana use2
Lifetime heroin use
Current use of any illicit drug2
Current marijuana use2
Lifetime inhalant use4
1979
14.1
2.6
13.2
1.3
16.3
14.2
1982
2.4
11.5
1.0
9.9
1985
12.1
3.0
3.7
9.7
0.9
13.2
10.2
1988
7.7
1.6
2.6
6.2
0.9
8.1
5.4
1990
6.7
0.9
1.8
5.4
0.8
7.1
4.4
1991
6.6
1.0
1.9
5.1
1.2
5.8
3.6
1992
5.8
0.7
1.5
4.7
0.8
5.3
3.4
1993
5.9
0.7
1.3
4.6
1.0
5.7
4.0
1994
6.0
0.7
1.2
4.8
1.0
8.2
6.0
7.0
1995
6.1
0.7
1.2
4.7
1.2
10.9
8.2
7.4
1996
6.1
0.8
1.2
4.7
1.1
9.0
7.1
5.9
1997
6.4
0.7
1.2
5.1
0.9
11.4
9.4
7.2
1998
6.2
0.8
1.1
5.0
1.1
9.9
8.3
6.1
1999-PAPI
7.0
0.8
5.4
9.0
7.0
1999-CAI
6.3
0.7
0.9
4.7
1.4
9.8
7.2
9.1
2000-CAI
6.3
0.5
0.8
4.8
1.2
9.7
7.2
8.9
2001-CAI
7.1
0.7
0.9
5.4
1.4
10.8
8.0
8.6
— Data not available.
1In 1999, the survey methodology changed from a paper-and-pencil interview (PAPI) to a computer-assisted interview (CAI). A PAPI supplement conducted in 1999 provides estimates that are comparable to previous years. Estimates based on the new CAI methodology are not directly comparable to previous years.
2Data for past-month (current) use.
3Less than monthly use.
4Prior to a 1994 questionnaire change; data did not allow separate reporting for this age group.
Note: “Any illicit drug use” includes use of marijuana, cocaine, hallucinogens, inhalants (except in 1982), heroin, or nonmedical use of sedatives, tranquilizers, stimulants, or analgesics. The exclusion of inhalants in 1982 is believed to have resulted in underestimates of any illicit use for that year, especially for adolescents.
Sources: National Institute on Drug Abuse (1979–1991), and Substance Abuse and Mental Health Services Administration (1992–2001), National Household Survey on Drug Abuse.

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Last Updated: May 7, 2003