3b When did the firm get this registration the first time (year)?
CDC (if applicable)
Categories
Value
Category
-9
don't know
Sysmiss
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
Others
Notes
q3b_21. when did the firm get this registration the first time (year)?_ cdc (if applicable)