The games some drugmakers play

We often talk about how the price of some drugs increases every year to unsustainable levels. In some cases, what starts the price spiral is a gaming strategy:

Have a look at what happens to this drug price and when:

http://static2.businessinsider.com/image/58d179f4112f70e0018b5c20-1011/screen%20shot%202017-03-21%20at%2030633%20pm.png

                           courtesy Business Insider