Table of Contents SCHEDULE VI. SUPPLEMENTAL INFORMATION CONCERNING PROPERTY AND CASUALTY INSURANCE OPERATIONS 147 As of and for the years ended December 31 Consolidated Property and Casualty Operations (In millions) 2018 2017 2016 Balance Sheet Data Deferred acquisition costs $ 632 $ 632 Reserves for unpaid claim and claim adjustment expenses 21,984 22,004 Discount deducted from claim and claim adjustment expense reserves above (based on interest rates ranging from 3.5% to 8.0%) 1,388 1,434 Unearned premiums 4,183 4,029 Statement of Operations Data Net written premiums $ 7,345 $ 7,069 $ 6,988 Net earned premiums 7,312 6,988 6,924 Net investment income 1,751 1,992 1,952 Incurred claim and claim adjustment expenses related to current year 5,358 5,201 5,025 Incurred claim and claim adjustment expenses related to prior years (179 ) (381 ) (342 ) Amortization of deferred acquisition costs 1,335 1,233 1,235 Paid claim and claim adjustment expenses 5,331 5,341 5,134