Frequencies for first 10,000 rows of prov0620 variable in pos2006 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
   20050601 |          1        0.01       99.43
   20050701 |          1        0.01       99.44
   20050915 |          1        0.01       99.45
   20051001 |          1        0.01       99.46
   20051201 |          5        0.05       99.51
   20051209 |          1        0.01       99.52
   20060101 |          1        0.01       99.53
   20060301 |          6        0.06       99.59
   20060501 |          4        0.04       99.63
   20060601 |          6        0.06       99.69
   20060701 |          3        0.03       99.72
   20060901 |          4        0.04       99.76
   20061001 |          9        0.09       99.85
   20061101 |          2        0.02       99.87
   20061201 |          2        0.02       99.89
   20070101 |         10        0.10       99.99
   20070201 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016