Oregon’s projected unfunded liability for public pensions apparently shrunk significantly last year, mostly attributable to healthy investment earnings that pushed the fund past the $100 billion mark for the first time in its 75-year history.

A final accounting will come later this year, but preliminary numbers for 2021 peg the unfunded liability at either $19.7 billion or $14.4 billion, depending on whether “side accounts” are excluded or included. Side accounts are amounts of money that participating governments set aside to cover part of their future pension liabilities, but not all of the 900 government employers in the Public Employees Retirement System have set up such accounts.