Actuarial Valuation Reports Actuarial Valuation Report as of 09/30/2021 Actuarial Valuation Report as of 09/30/2019 Actuarial Report (PRB 400) as of 09/30/2019 Actuarial Valuation Report as of 09/30/2017 Actuarial Report (PRB_400)-as of 09/30/2017 Actuarial Valuation Report as of 12/31/2015 Actuarial Report (PRB-400)-as of 12/31/2015 Actuarial Valuation Report as of 12/31/2013 Actuarial Valuation Report as of 12/31/2011 Actuarial Valuation Report as of 12/31/2008