State Exports Sources
CDxports is comprised of three state-level export estimates. First, state agricultural export estimates draw from two primary information sources: (1) detailed U.S. national export data from the U.S. Bureau of the Census (“Census”) and (2) state cash receipts data from the U.S. Department of Agriculture (USDA). Second, state services exports estimates draw from two primary information sources: (1) detailed U.S. services export data from the Bureau of Economic Analysis and (2) state-level, value-added output data for U.S. services sectors from Moody’s Analytics. For certain services export categories with that would be associated with a range of producing sectors (e.g., industrial processes and research and development), CDxports uses industry data published by the U.S. Internal Revenue Service and the National Science Foundation to supplement the primary sources. Finally, all data on education exports are derived from economic impact estimates from NAFSA: Association of International Educators (NAFSA), available at http://www.nafsa.org/eis. Third, state goods exports estimates come from the Census, as accessed through “USA Trade Online.”
As the agricultural commodity and services sector definitions from the information sources varied, The Trade Partnership created concordance tables linking cash receipts and services exports to the industries producing such products classified according to the North American Industry Classification System (NAICS). Conversions and adjustments for such differences are imperfect, so the figures reported in CDxports are estimates.
Since state-level export estimates are drawn from multiple sources and certain exports that cannot be allocated to individual counties are excluded (e.g., second-hand goods), the state totals reflected in the CDxports database do not match those reported by the U.S. Census Bureau.
Congressional District Export Sources
CDxports apportions state exports to counties using two data sources: (1) detailed county sales estimates from the USDA Agricultural Census (agricultural products only), and (2) county-level, valued added output data from Moody’s Analytics. CDxports then apportions county-level export estimates to individual congressional districts using three additional data sources: (1) geographic relationship tables from the U.S. Census Bureau; (2) company location information from U.S. Business List Database; and (3) geographic relationship tables from ZIPInfo. For counties that fall into one congressional district, The Trade Partnership uses the geographic relationship tables from Census. For counties that fall into multiple congressional districts, 9-digit zip code information from U.S. Business List Database and ZIPInfo was used to determine the share of county businesses in each detailed industry that was located in each congressional district and exports were apportioned accordingly. NAFSA provides data at the congressional district level, so the apportionment methodology does not apply to education estimates.
CDxports reports merchandise exports at the NAICS3 sector level (e.g., machinery) or the NAICS4 detailed sub-sector level (e.g., agricultural & construction machinery, industrial machinery, HVAC & refrigeration machinery). CDxports reports services exports for nine industries and 22 detailed subsectors reported by the Bureau of Economic Analysis. In all cases, the sum of the sub-sectors should equal the sector total (any differences are due to rounding).
CDxjobs derives its estimates of direct and indirect jobs tied to the exports of an industry from a given congressional district using domestic employment requirement tables from the U.S. Bureau of Labor Statistics.
Direct jobs tied to an industry's exports represent jobs in that industry and are assumed to be located in the district. Indirect jobs tied to an industry's exports represent jobs in all other industries and may be located throughout the United States, as well as in the district. Adding direct and indirect jobs estimates would provide the national job impact of a district's exports for a given industry but would overstate the number of jobs supported in the district itself, and therefore should not be done to estimate total jobs supported by exports in a district.
Estimated by The Trade Partnership (Washington, DC).