There was no cost done to look at the actuarial factors when they were increased in 2009. They were increased to bring them to neutrality, to ensure it's neutral to the plan. So if you take your retirement earlier we pay it for a longer period of time. Therefore, you are receiving the same amount in the plan for which you've contributed. If you take it later, if you delay it as well, we've increased our actuarial factor to 42%. So you take it for a shorter period of time but you will be receiving more. It's a neutrality. There is a provision in the legislation that requires that these actuarial factors be looked at every third triennial review.
On November 14th, 2016. See this statement in context.