process emissions, and indirect emissions from the generation of electricity used to produce the output of the sector) of the sector based on data described in subparagraph (C), multiplied by the applicable rate in section 9901(b)(2), by (II) the value of the shipments of the sector, based on data described in subparagraph (C). (iii) Trade intensity As determined by the Secretary, an industrial sector meets the criteria of this clause if the industrial sector has a trade intensity of at least 15 percent, calculated by dividing— (I) the value of the total imports and exports of the sector, by (II) the value of the shipments plus the value of imports of the sector, based on data described in subparagraph (C). (B) Metal and phosphate production classified under more than one naics code For purposes of this section, the Secretary shall— (i) aggregate data for the beneficiation or other processing (including agglomeration) of metal ores, including iron and copper ores, soda ash, or phosphate with subsequent steps in the process of metal and phosphate manufacturing, regardless of the NAICS code under which the activity is classified, and (ii) aggregate data for the manufacturing of steel with the manufacturing of steel pipe and tube made from purchased steel in a nonintegrated process. (C) Data sources (i) Value of shipments (I) In general The Secretary shall determine the value of shipments under this subsection from data from the United States Census Annual Survey of Manufacturers. (II) Average data available The Secretary shall use the average of data from the most recent 3 years for which the data are available. (III) Average data not available If data described in subclause (II) are unavailable, the Secretary shall make a determination based on— (aa) data from the most detailed industrial classification level of the Manufacturing Energy Consumption Survey of the Energy Information Administration, and (bb) data from the most recent Economic Census of the United States. (IV) Data not available for sector If data