aggregate

The revisions of IP, capacity, and capacity utilization will incorporate updated source data for recent years and will feature a change in the method of aggregating the indexes.

It should be kept in mind that when computing the taxable income limitation at the individual level, the taxable income derived from the active conduct of a trade or business is determined by aggregating the net income or loss from all of the trades or businesses actively conducted by the individual.

At the end of the appendix are historical data, 1967-89, for total industry (table A.2) and formulas for aggregating capacity and calculating utilization.