Unadjusted flow from BEA, NIPA. Series is calculated as the sum of Table 2.1, line 3, Personal income, Wage and salary disbursements; and Table 5.1, line 10, Net private saving, Wage accruals less disbusements. Series is converted to quarterly basis by dividing the unadjusted flow by 4. Data for the most recent ten years show no significant seasonality. Series has no levels.