I am trying to determine what share of persons in the labor force were in different industries at the state level from the year 1979 to 2013. The IND1990 variable appears to provide a comparable classification over time, but it appears to only be available for the March samples from 2011-2014 and 1979-1988. Since I am looking at the state level, I’m not sure that the March sample sizes alone will be sufficient for those years depending on the level of industry classification I am looking at.
Is this one of the variables that just hasn’t been added yet to the other samples? And if that is the case, is there a way to calculate the IND1990 values for other samples myself or might you be aware of another source that might have a consistent industry classification over time? So far, IPUMS has been the only one that I have found.
Thank you so much for your help. It is greatly appreciated.