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Footnotes for
Table 2BU. Real Manufacturing and Trade Sales, Seasonally Adjusted at Monthly Rate


Note. Estimates in this table are based on the North American Industry Classification System (NAICS).
Chained (2000) dollar final sales series are calculated as the product of the chain-type quantity index
and the 2000 current-dollar value of the corresponding series, divided by 100. Because the formula
for the chain-type quantity indexes uses weights of more than one period, the corresponding chained-dollar
estimates are usually not additive. The residual line is the difference between the first line and
the sum of the most detailed lines for inventories.

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