Annual flow from BEA, Fixed Asset Table 1.5 Investment in Fixed Assets and Consumer Durable Goods, line 13, Consumer durable goods. Annual flow is converted to seasonally adjusted quarterly flows by calculating the ratio of line 13, Consumer durable goods, to NIPA, Table 1.1.5 Gross Domestic Product, line 4, Personal consumption expenditures, Durable goods (annual); multiplied by line 4, Personal consumption expenditures, durable goods (quarterly). Unadjusted flow is the seasonally adjusted flow at an annual rate divided by 4. Series has no levels.