Year-end level estimated from DOL Employee Benefits Security Administration, Private Pension Plan Bulletin: Abstract of Form 5500 Annual Reports and DOL Form 5500 Direct Filing Entity Bulletin: Abstract of Form 5500 Annual Reports table 12, Defined Benefit, as Assets in registered investment companies, plus a portion of Assets in common/collective trusts and Assets in master trusts, where the portion is estimated using DFE Table 2 and Table 12. The level is then adjusted for plans whose fiscal years do not end on December 31 and to include plans with fewer than 100 participants. Data are available with a two-year lag. Series is converted to quarterly and estimated for quarters assuming constant flows throughout the year. Milliman growth rates used to estimate asset levels after benchmark years. Capital gains are estimated based on the percent change in the Dow Jones U.S. total stock market index FOF series FI073164013) applied to the previous quarter's level. The unadjusted flow is the change in the level less estimated capital gains; data for the most recent ten years show no significant seasonality.