We did some longer-term analysis of the fiscal implication of this measure to make sure that with baby boomers the cost would not increase significantly over the long term. There will be some slight increase in cost over the next 10 or 20 years, but then there are also some offsetting effects due to the fact that this is a deferral measure in a way; savings will end up being taxed at some point. Overall we haven't seen significant pressure on the fiscal cost over a longer period of time.
On June 4th, 2015. See this statement in context.