Frequencies for first 10,000 rows of exp_dtstr variable in drug2014q3 dataset :

     Expiration date of the |
        drug.Multiple dates |
                  possible. |      Freq.     Percent        Cum.
----------------------------+-----------------------------------
                            |      9,999       99.99       99.99
                     201005 |          1        0.01      100.00
----------------------------+-----------------------------------
                      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2017