Frequencies for first 10,000 rows of prov0630 variable in pos1997 dataset :

        ltc |
  agreement |
  extension |
       date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,945       99.45       99.45
   19850228 |          1        0.01       99.46
   19881231 |          1        0.01       99.47
   19900731 |          1        0.01       99.48
   19910131 |          2        0.02       99.50
   19910430 |          1        0.01       99.51
   19910831 |          1        0.01       99.52
   19910930 |          3        0.03       99.55
   19911231 |          1        0.01       99.56
   19920229 |          3        0.03       99.59
   19920331 |          1        0.01       99.60
   19920430 |          1        0.01       99.61
   19920531 |          1        0.01       99.62
   19920630 |          1        0.01       99.63
   19920831 |          2        0.02       99.65
   19921031 |          2        0.02       99.67
   19921130 |          2        0.02       99.69
   19930131 |          1        0.01       99.70
   19930228 |          1        0.01       99.71
   19930430 |          2        0.02       99.73
   19930830 |          1        0.01       99.74
   19931031 |          1        0.01       99.75
   19940228 |          1        0.01       99.76
   19940331 |          1        0.01       99.77
   19940430 |          1        0.01       99.78
   19940531 |          1        0.01       99.79
   19940731 |          2        0.02       99.81
   19951231 |          1        0.01       99.82
   19960630 |          1        0.01       99.83
   19960831 |          1        0.01       99.84
   19971130 |          1        0.01       99.85
   19980131 |          9        0.09       99.94
   19980228 |          3        0.03       99.97
   19980331 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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