business sales of CHF fourth quarter of 2015 of CHF 3,797 million as well as adjustments for certain accounting changes (which had not been in place at the launch of the cost savings program) of CHF 170 million in 2017, debit valuation adjustments related to volatility of CHF 83 million in 2017 and for foreign exchange (CHF (319) million in 2015, CHF (293) million in 2016 and CHF (326) million in 2017).