"The number of people in substitution treatment leapt from 6,040 in 1999 to 14,877 in 2003, an increase of 147%. The number of places in detoxification, therapeutic communities and half-way houses has also increased. . . . The national strategy has led directly to in-creases in the scale of treatment and pre-vention activities in Portugal."
Perhaps you could support the notion that removing penalties would lead to an increase in use? Because I can show you a lot of examples where that assumption falls flat on its face.