Table of Contents CITIZENS, INC. Item 6.  SELECTED FINANCIAL DATA The following table presents selected financial data of the Company. The information presented below is not necessarily indicative of results of future operations and should be read in conjunction with  Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations and  Item 8. Financial Statements and Supplementary Data of this Form 10-K to fully understand the factors that may affect the comparability of the information presented below. Years ended December 31, (In thousands, except per share data) 2019 2018 2017 2016 2015 Operating items Insurance premiums $ 184,347 187,860 197,720 197,876 194,480 Net investment income 59,531 54,205 53,146 48,560 45,782 Realized investment gains (losses) 5,249 108 518 (1,985) (5,459) Total revenues 250,545 244,006 252,627 245,406 236,268 Net income (loss) before federal income taxes 5,745 2,002 (2,986) 5,483 (1,943) Net income (loss) (1,370) (11,062) (38,127) 1,969 (3,143) Balance sheet data Total assets 1,744,936 1,615,561 1,644,453 1,583,668 1,480,751 Total liabilities 1,485,100 1,427,828 1,420,940 1,334,568 1,233,825 Total stockholders' equity 259,836 187,733 223,513 249,100 246,926 Life insurance in force 4,246,781 4,350,538 4,469,735 4,497,735 4,478,202 Per share data Book value per share 5.17 3.75 4.46 4.97 4.93 Basic and diluted income (loss) per Class A share (0.03) (0.22) (0.77) 0.04 (0.06) December 31, 2019 | 10-K 27