Frequencies for first 10,000 rows of filing_req_cd variable in eobmfia dataset :

               Filiing Requirement Code |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
 990 - Not required to file (all other) |        318        3.18        3.18
        990 (all other) or 990EZ return |      2,524       25.24       28.42
990 - Required to file Form 990-N - Inc |      5,915       59.15       87.57
                     990 - Group return |          2        0.02       87.59
   990 - Not required to file (church)  |      1,144       11.44       99.03
             990 - Government 501(c)(1) |          3        0.03       99.06
990 - Not required to file (religious o |         88        0.88       99.94
990 - Not required to file (instrumenta |          6        0.06      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Apr 2019