Table of Contents Commercial - Commercial Auto Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table. As of December 31 Calendar Year As of December 31, 2018 (In millions, except reported claims data) 2009 (1) 2010 (1) 2011 (1) 2012 (1) 2013 (1) 2014 (1) 2015 (1) 2016 (1) 2017 (1) 2018 IBNR Cumulative Number of Claims Accident Year 2009 $ 291 $ 276 $ 280 $ 282 $ 285 $ 281 $ 278 $ 276 $ 276 $ 277 $ — 48,499 2010 267 283 287 291 298 293 289 288 288 1 48,030 2011 268 281 288 302 300 294 294 294 4 47,905 2012 275 289 299 303 307 299 299 6 46,288 2013 246 265 265 249 245 245 7 39,429 2014 234 223 212 205 205 9 33,609 2015 201 199 190 190 22 30,388 2016 198 186 186 27 30,342 2017 199 198 45 30,580 2018 229 118 28,602 Total $ 2,411 $ 239 Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table. As of December 31 Calendar Year (In millions) 2009 (1) 2010 (1) 2011 (1) 2012 (1) 2013 (1) 2014 (1) 2015 (1) 2016 (1) 2017 (1) 2018 Accident Year 2009 $ 73 $ 130 $ 191 $ 233 $ 261 $ 272 $ 274 $ 274 $ 275 $ 277 2010 74 141 203 246 271 281 286 287 287 2011 79 145 199 248 274 284 287 289 2012 78 160 220 259 282 285 290 2013 74 135 168 200 225 234 2014 64 102 137 166 187 2015 52 96 130 153 2016 52 93 126 2017 58 107 2018 66 Total $ 2,016 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 395 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2009 6 Liability for unallocated claim adjustment expenses for accident years presented 11 Total net liability for unpaid claim and claim adjustment expenses $ 412 For the years ended December 31 Calendar Year (In millions) 2010 (1) 2011 (1) 2012 (1) 2013 (1) 2014 (1) 2015 (1) 2016 (1) 2017 (1) 2018 Total Accident Year 2009 $ (15) $ 4 $ 2 $ 3 $ (4) $ (3) $ (2) $ — $ 1 $ (14) 2010 16 4 4 7 (5 ) (4 ) (1 ) — 21 2011 13 7 14 (2) (6) — — 26 2012 14 10 4 4 (8 ) — 24 2013 19 — (16) (4) — (1) 2014 (11 ) (11 ) (7 ) — (29 ) 2015 (2) (9) — (11) 2016 (12 ) — (12 ) 2017 (1) (1) Total net development for the accident years presented above (37 ) (41 ) — Total net development for accident years prior to 2009 (10) 4 — Total unallocated claim adjustment expense development — 2 1 Total $ (47) $ (35) $ 1 (1) Data presented for these calendar years is required supplemental information, which is unaudited. Net strengthening or (releases) of prior accident year reserves is presented in the following table. 99