Seasonally adjusted transactions from BEA, NIPA, Table 1.5.5 Gross Domestic Product, Expanded Detail, line 49, Imports. Beginning 2002:Q1, unadjusted transactions from BEA, NIPA, Table 8.1.5 Gross Domestic Product, Not Seasonally Adjusted, line 13, Imports. Seasonal factors are calculated as the seasonally adjusted transactions at an annual rate, divided by four, less the unadjusted quarterly transactions. Prior to 2002:Q1, unadjusted transactions are calculated as transactions at a seasonally adjusted annual rate divided by 4. Series has no levels.
Last edited on: 05/14/2015