Frequencies for proc_dt variable in hcris2552_96_1995 dataset :

      hcris |
    process |
       date |      Freq.     Percent        Cum.
------------+-----------------------------------
  20 Mar 98 |          1       50.00       50.00
  13 Oct 99 |          1       50.00      100.00
------------+-----------------------------------
      Total |          2      100.00

by Jean Roth , jroth@nber.org , 6 Sep 2018