Frequencies for first 10,000 rows of pct012k133 variable in sf12010860us30 dataset :

   26 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,936       89.36       89.36
          1 |        749        7.49       96.85
          2 |        190        1.90       98.75
          3 |         64        0.64       99.39
          4 |         25        0.25       99.64
          5 |          7        0.07       99.71
          6 |          9        0.09       99.80
          7 |          3        0.03       99.83
          9 |          3        0.03       99.86
         10 |          1        0.01       99.87
         11 |          2        0.02       99.89
         17 |          2        0.02       99.91
         20 |          1        0.01       99.92
         21 |          1        0.01       99.93
         26 |          1        0.01       99.94
         28 |          1        0.01       99.95
         32 |          1        0.01       99.96
         52 |          1        0.01       99.97
         55 |          2        0.02       99.99
         68 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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