Monthly & Annual Wholesale Trade

A sample revision is the process used to re-design and re-select the samples for many of the Census Bureau’s surveys of the retail, wholesale, and service industries. This process is performed to

• ensure each sample is representative of its target population
• improve the efficiency of each sample
• incorporate updates to the industry classification structure
• expand industry coverage of the survey
• update questions and instructions to obtain more accurate data, and
• redistribute burden for small and medium size businesses

The current Annual Wholesale Trade Survey sample was introduced in March 2007 with the release of estimates for reference year 2005.

Sample revisions are performed approximately every 5 to 7 years. During the period for which the samples are used, updates are made on a quarterly basis to reflect changes in the business universe. These updates are designed to account for new businesses (births) and businesses that discontinue operations (deaths). The samples are also updated to reflect mergers, acquisitions, divestitures, splits, and other changes to the business universe.

Annual Wholesale Trade Survey estimates will be based on the new sample effective with the release of 2011 estimates on February 28, 2013.

The size of the new and current Annual Wholesale Trade Survey samples is approximately 8,700 employer firms.

Yes. Estimates from different samples have been put on a comparable basis.