Annual Survey of Manufactures

Annual Survey of Manufactures. The Annual Survey of Manufactures (ASM) is a principal source of detailed, sector-specific economic data for the United States manufacturing industry, conducted by the United States Census Bureau. It provides critical annual statistics on key operational metrics such as employment, payroll, capital expenditures, and the cost of materials for establishments engaged in the NAICS manufacturing sector. The survey serves as a vital benchmark and supplement to the broader Economic Census, offering policymakers, economists, and business leaders timely insights into the health and structural changes of this foundational component of the American economy.

Overview and Purpose

The primary purpose of the ASM is to furnish comprehensive and reliable annual estimates for the manufacturing sector between the comprehensive five-year Economic Census cycles. It is designed to measure the current state of industrial activity, track trends in production and investment, and provide essential data for the computation of key national economic accounts, including the Gross Domestic Product and the Producer Price Index. The survey supports the analytical needs of federal agencies like the Federal Reserve Board and the Bureau of Economic Analysis, while also serving academic researchers, industry associations such as the National Association of Manufacturers, and state-level planning agencies. By capturing detailed establishment-level data, the ASM enables analysis of productivity, competitiveness, and the geographic distribution of manufacturing activity across states like Ohio, Michigan, and Texas.

Data Collection and Methodology

Data collection for the ASM is conducted primarily through mail-out/mail-back questionnaires and electronic reporting, targeting a large, stratified sample of manufacturing establishments. The sample frame is derived from the Business Register, the Census Bureau's comprehensive database of all known U.S. business locations. The sample is stratified based on industry classification from the North American Industry Classification System and establishment size, ensuring robust representation of both large firms like General Motors and smaller enterprises. Established statistical methodologies, including ratio estimation and link relative estimation, are applied to the sample data to produce accurate national and state-level estimates. The survey undergoes rigorous review and validation processes to ensure data quality and consistency with other major programs like the Current Industrial Reports.

Key Economic Indicators Measured

The ASM collects and publishes data on a wide array of critical economic indicators that define manufacturing performance. Core measures include total value of shipments, which reflects the total output of establishments, and the cost of materials, supplies, and energy consumed in production. It also details employment figures, total payroll, and hours worked, providing insight into the sector's labor market dynamics. Furthermore, the survey captures capital investment through data on capital expenditures for new and used structures and equipment, and measures value added by manufacture, a key metric for assessing an industry's contribution to Gross Domestic Product. Additional data points include end-of-year inventories and expenditures for research and development activities.

Historical Context and Evolution

The ASM was inaugurated in 1949, evolving from earlier, less frequent manufacturing censuses to meet the growing demand for timely, intercensal economic data during the post-World War II industrial expansion. Its development was closely tied to the needs of the United States Department of Commerce and the Council of Economic Advisers to better monitor the economy. Over the decades, the survey's questionnaire and methodology have been refined to reflect changes in the industrial landscape, such as the rise of automation and global supply chains. Significant milestones include its alignment with the shift from the Standard Industrial Classification system to the North American Industry Classification System in 1997, and the continuous integration of improved sampling techniques and electronic data collection methods to enhance accuracy and reduce respondent burden.

Data Availability and Use

ASM data are made publicly available through detailed statistical tables and reports published by the United States Census Bureau, typically with a lag of about 18-24 months after the reference year. Key data products include geographic area series, industry series, and subject series, which are accessible via the Census Bureau's website and through tools like Data.census.gov. These data are extensively utilized by the Bureau of Labor Statistics for productivity studies, by the Federal Reserve System for informing monetary policy, and by state governments for economic development planning. Academic institutions and private sector analysts also rely on ASM data for market research, forecasting, and studying long-term trends in deindustrialization, technological adoption, and the impact of trade policies like NAFTA. Category:United States Census Bureau Category:Economic surveys Category:Manufacturing in the United States