Frequencies for first 10,000 rows of prov0630 variable in pos2001 dataset :

        ltc |
  agreement |
  extension |
       date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,928       99.28       99.28
   19850228 |          1        0.01       99.29
   19881231 |          1        0.01       99.30
   19900731 |          1        0.01       99.31
   19910131 |          2        0.02       99.33
   19910430 |          1        0.01       99.34
   19910831 |          1        0.01       99.35
   19910930 |          3        0.03       99.38
   19911231 |          1        0.01       99.39
   19920229 |          3        0.03       99.42
   19920331 |          1        0.01       99.43
   19920430 |          1        0.01       99.44
   19920531 |          1        0.01       99.45
   19920630 |          1        0.01       99.46
   19920831 |          2        0.02       99.48
   19921031 |          2        0.02       99.50
   19921130 |          2        0.02       99.52
   19930131 |          1        0.01       99.53
   19930228 |          1        0.01       99.54
   19930430 |          2        0.02       99.56
   19930830 |          1        0.01       99.57
   19931031 |          1        0.01       99.58
   19940228 |          1        0.01       99.59
   19940331 |          1        0.01       99.60
   19940430 |          1        0.01       99.61
   19940531 |          1        0.01       99.62
   19940731 |          1        0.01       99.63
   19951231 |          1        0.01       99.64
   19960630 |          1        0.01       99.65
   19991031 |          1        0.01       99.66
   20000331 |          1        0.01       99.67
   20010131 |          1        0.01       99.68
   20010228 |          1        0.01       99.69
   20010831 |          1        0.01       99.70
   20010930 |          1        0.01       99.71
   20011031 |          2        0.02       99.73
   20011130 |          4        0.04       99.77
   20011231 |          8        0.08       99.85
   20020131 |          2        0.02       99.87
   20020228 |          9        0.09       99.96
   20020331 |          2        0.02       99.98
   20020430 |          1        0.01       99.99
   20020531 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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