Frequencies for first 10,000 rows of report_datestr variable in psfipf dataset :

Report Date |      Freq.     Percent        Cum.
------------+-----------------------------------
   20130628 |        338        3.38        3.38
   20180629 |      9,662       96.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 24 Sep 2018