Every vintage kept
Official revisions
When a later release changes a figure already published, both values are kept and the change is listed here. Revision is normal statistical practice: survey estimates are reweighted, administrative returns arrive late, methods improve. The official explanation, where the publisher gives one, is on the release page.
Major revisions
Revisions of 5% or more, or one percentage point or more for a rate.
No published figure has been revised by a later release since ingestion began.
All revisions
No published figure has been revised by a later release since ingestion began.