Frequencies for first 10,000 rows of planexpirationdate variable in plan2014 dataset :

       Plan |
 Expiration |
       Date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,521       65.21       65.21
 2014-12-31 |      3,443       34.43       99.64
 2015-01-01 |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017