The following table details the Company’s prior year net development by segment of its liability for net unpaid claims and claim expenses: Year ended December 31, 2021 2020 2019 (Favorable) adverse development (Favorable) adverse development (Favorable) adverse development Property $ (233,373) $ (157,049) $ (2,973) Casualty and Specialty (16,097) (26,763) (23,882) Total net (favorable) adverse development of prior accident years net claims and claim expenses $ (249,470) $ (183,812) $ (26,855) Changes to prior year estimated net claims reserves increased net income by $249.5 million during 2021 (2020 - increased net income by $183.8 million, 2019 - increased net income by $26.9 million), excluding the consideration of changes in reinstatement, adjustment or other premium changes, profit commissions, redeemable noncontrolling interest - DaVinciRe and Vermeer and income tax. Property Segment The following tables detail the development of the Company’s liability for net unpaid claims and claim expenses for its Property segment, allocated between large and small catastrophe net claims and claim expenses and attritional net claims and claim expenses, included in the other line item: Year ended December 31, 2021 (Favorable) adverse development Catastrophe net claims and claim expenses Large catastrophe events 2020 Weather-Related Large Loss Events $ 17,140 2019 Large Loss Events (61,634) 2018 Large Loss Events (101,096) 2017 Large Loss Events (49,090) Other (9,392) Total large catastrophe events (204,072) Small catastrophe events and attritional loss movements Other small catastrophe events and attritional loss movements (34,751) Total small catastrophe events and attritional loss movements (34,751) Total catastrophe and attritional net claims and claim expenses (238,823) Actuarial assumption changes 5,450 Total net (favorable) adverse development of prior accident years net claims and claim expenses $ (233,373) The net favorable development of prior accident years net claims and claim expenses within the Company’s Property segment in 2021 of $233.4 million was primarily comprised of net favorable development on prior year accident years net claims and claim expenses associated with the following large catastrophe events: • $17.1 million of net adverse development associated with Hurricanes Laura, Sally, Isaias, Delta, Zeta and Eta, the California, Oregon and Washington wildfires, Typhoon Maysak, the August 2020 Derecho, and losses associated with aggregate loss contracts (collectively, the “2020 Weather- Related Large Loss Events”). • $61.6 million of net favorable development associated with Hurricane Dorian and Typhoons Faxai and Hagibis and certain losses associated with aggregate loss contracts (collectively, the “2019 Large Loss Events”); F-51