Research Article
Modeling Illicit Drug Use Dynamics and Its Optimal Control Analysis
Table 1
Recorded prevalence of illicit drug use in Cape Town, South Africa.
| | Year | 96b | 97a | 97b | 98a | 98b | 99a | 99b | 00a | 00b | 01a | 01b | 02a | | % | 20 | 19 | 22.1 | 25 | 35.1 | 44.1 | 50.1 | 54.2 | 48.1 | 57.1 | 54.3 | 54.3 |
| | Year | 02b | 03a | 03b | 04a | 04b | 05a | 05b | 06a | 06b | 07a | 07b | 08a | | % | 52.8 | 58.7 | 62.9 | 61.1 | 66.3 | 65.6 | 74.9 | 69.9 | 73.2 | 70.5 | 70.5 | 69.4 |
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