Frequencies for first 10,000 rows of prov0625 variable in pos2007 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
   20040629 |          1        0.01       99.39
   20040731 |          1        0.01       99.40
   20041021 |          1        0.01       99.41
   20041031 |          1        0.01       99.42
   20070930 |          3        0.03       99.45
   20071130 |          1        0.01       99.46
   20071208 |          1        0.01       99.47
   20080131 |          2        0.02       99.49
   20080229 |          1        0.01       99.50
   20080430 |          1        0.01       99.51
   20080531 |          5        0.05       99.56
   20080630 |          3        0.03       99.59
   20080731 |          1        0.01       99.60
   20080831 |          3        0.03       99.63
   20080930 |          8        0.08       99.71
   20081031 |          3        0.03       99.74
   20081130 |          3        0.03       99.77
   20081231 |         10        0.10       99.87
   20090131 |          3        0.03       99.90
   20090228 |          6        0.06       99.96
   20090430 |          3        0.03       99.99
   20090531 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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