koretz pay the non-funded actuary liability and that cost is decreasing if 6.9 percent to 5.6 percent and ann will go there the causes of that reductions but that is what is driving the reduction in costs as you can see the normal costs have stayed pretty well and next slide, please. good afternoon, commissioners i'm going to review the sources of changes from the prior valuation that bill highlighted and looting the changes in the polar contributions before the cost adjustments you may ask the question how the u a l is created there are several reasons for that. when there is any doe vacation the assumption increases from the liability (rustling of papers.) and changes on the (background noise.) u a l and almost never get it correct long term aggregate to be reasonable and another source of change in the u a l contributions and in california month systems having contributions that are high enough to pay the interest occurring but principles. so what we're seeing here from last year to this year as bill mentioned an, an actual because of decreasing in the chart scale is in millions an