Frequencies for first 10,000 rows of prov0630 variable in pos2010 dataset :

        LTC |
  AGREEMENT |
  EXTENSION |
       DATE |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,990       99.90       99.90
   20110228 |          1        0.01       99.91
   20110430 |          5        0.05       99.96
   20110630 |          3        0.03       99.99
   20110731 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017