Frequencies for first 10,000 rows of prov0620 variable in pos2008 dataset :

        ltc |
  agreement |
  beginning |
       date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,928       99.28       99.28
   19860301 |          1        0.01       99.29
   19951001 |          5        0.05       99.34
   19960425 |          1        0.01       99.35
   19960701 |          1        0.01       99.36
   19970801 |          1        0.01       99.37
   20020401 |          1        0.01       99.38
   20030701 |          1        0.01       99.39
   20030801 |          1        0.01       99.40
   20031101 |          2        0.02       99.42
   20071115 |          1        0.01       99.43
   20080401 |          2        0.02       99.45
   20080501 |          2        0.02       99.47
   20080601 |          6        0.06       99.53
   20080701 |          3        0.03       99.56
   20080901 |          3        0.03       99.59
   20081001 |         11        0.11       99.70
   20081005 |          1        0.01       99.71
   20081101 |          3        0.03       99.74
   20081130 |          1        0.01       99.75
   20081201 |          3        0.03       99.78
   20090101 |         10        0.10       99.88
   20090201 |          3        0.03       99.91
   20090301 |          6        0.06       99.97
   20090501 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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