The curve has two components. Supply and DEMAND. Your proof is lacking.
1989-03-13
-snip-
But those here and across the country who join me today in our just war against drugs may take some renewed confidence in our prospects for success because the President of the United States has placed this struggle at the top of his administration's agenda, at the top of our common national agenda where it needs to be.
-snip-
My office is already conducting an exhaustive review of our national fight against drugs on both supply and demand sides. Where past strategy has succeeded, we will see to it that it's continued. Where past strategy has failed, we will see that it's replaced or modified.
http://bushlibrary.tamu.edu/research/public_papers.php?id=160&year=1989&month=3
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You can view the supply/demand figures since Dr. Bennett launched the current WOD in 1989:
http://www.briancbennett.com/quick-look.htm
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Would you say the WOD has succeeded in reducing supply and demand?