There is a continuous, steady climb from 2005.

The prescription drug plans were able to negotiate discounts and rebates that came in larger than we thought, and this has helped mitigate what drug spending would have been. It doesn't mean drug spending won't continue to grow, but it has helped to temper that growth.

The prescription-drug plans were able to negotiate discounts and rebates that came in larger than we thought, and this has helped mitigate what drug spending would have been.