Seasonally adjusted flow from BEA, NIPA, Table 3.2, line 10, Taxes from the rest of the world. Unadjusted flow from BEA, NIPA, Table 3.22, line 6, Taxes from the rest of the world. Seasonal factors are calculated as the seasonally adjusted flow at an annual rate, divided by four, less the unadjusted quarterly flow. Series has no levels.
