Why is there no unit value data anymore?
That functionality was removed in the new DataWeb because of inadvertent and unintentional errors that occurred in the calculation of those per unit values in the legacy version. The data contained in DataWeb (i.e., the merchandise trade statistics of the United States) are not a USITC work product, but rather are data published by the U.S. Department of Commerce. The Census Bureau at times redact some quantity data in certain records due to data confidentiality considerations but these redactions are not identified in the data files.
In older versions of DataWeb, these data redactions resulted in the per unit calculations being inaccurate because of the missing quantities. For this version of DataWeb, the per unit calculations are removed as an option from the application, and new functionality was added to quantity data pulls to estimate where data redactions might have been made by the Census Bureau in the dataset (in data downloads, these possible data suppressions are flagged with separate columns called “_suppressed” whereas in the web browser these are flagged with stars next to the aggregate quantities that contain missing data). Users must calculate their own unit values but should be cognizant of the potential for missing or redacted quantities.