Quote:
Originally Posted by Traditional_Ale
How does that work?
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More recent research undertaken at the University of Mississippi's Potency Monitoring Project[50] has found that average THC levels in cannabis samples between 1975 and 2007 have increased from 4% in 1983 to 9.6% in 2007.
(0.096-0.04)/0.04 = 1.4 = 140% increase