Annual unadjusted flow from BEA, NIPA. Series is calculated as Table 6.3D, line 3, Wage and salary accruals, Private industries; less line 57, Wage and salary accruals, Finance and insurance; less Table 1.13, line 44, Households and institutions, Wage and salary accruals; less line 51, Nonprofit institutions serving households, Wage and salary accruals; less Table 1.14, line 21, Nonfinancial corporate business, Wage and salary accruals. Quarterly unadjusted flow from unpublished detail provided by BEA. Data for the most recent ten years show no significant seasonality. Series has no levels.