Frequencies for first 10,000 rows of prov0625 variable in pos2004 dataset :

        ltc |
  agreement |
ending date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,928       99.28       99.28
   19870228 |          1        0.01       99.29
   19960930 |          5        0.05       99.34
   19970425 |          1        0.01       99.35
   19970630 |          1        0.01       99.36
   19980731 |          1        0.01       99.37
   20030331 |          1        0.01       99.38
   20040229 |          1        0.01       99.39
   20040312 |          1        0.01       99.40
   20040629 |          1        0.01       99.41
   20040731 |          1        0.01       99.42
   20041021 |          1        0.01       99.43
   20041031 |          1        0.01       99.44
   20041231 |          1        0.01       99.45
   20050228 |          1        0.01       99.46
   20050331 |          1        0.01       99.47
   20050430 |          3        0.03       99.50
   20050531 |          6        0.06       99.56
   20050630 |          3        0.03       99.59
   20050731 |          1        0.01       99.60
   20050831 |          3        0.03       99.63
   20050930 |         14        0.14       99.77
   20051031 |          7        0.07       99.84
   20051130 |          2        0.02       99.86
   20051231 |          6        0.06       99.92
   20060131 |          1        0.01       99.93
   20060224 |          1        0.01       99.94
   20060228 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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