Frequencies for first 10,000 rows of pct012n146 variable in sf12000860us29 dataset :

   39 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,219       92.19       92.19
          1 |        542        5.42       97.61
          2 |        117        1.17       98.78
          3 |         40        0.40       99.18
          4 |         25        0.25       99.43
          5 |         18        0.18       99.61
          6 |          5        0.05       99.66
          7 |          4        0.04       99.70
          8 |          4        0.04       99.74
          9 |          3        0.03       99.77
         10 |          4        0.04       99.81
         11 |          2        0.02       99.83
         12 |          4        0.04       99.87
         13 |          3        0.03       99.90
         14 |          1        0.01       99.91
         15 |          2        0.02       99.93
         18 |          1        0.01       99.94
         19 |          1        0.01       99.95
         23 |          1        0.01       99.96
         24 |          1        0.01       99.97
         29 |          1        0.01       99.98
         35 |          1        0.01       99.99
         47 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017