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The entire time-series history for each vintage (column) is available to the public at the vintage date shown in the column header.
For each observation, we report the appropriate values from each vintage that correspond with the statistical agency's first-, second-, and third-release values for that observation. (We also report the values as they appear in the most recent vintage available when we ran our programs.)
Please review the documentation for information on our data collection methods, data sources, and any specific information on this variable.