Frequencies for first 10,000 rows of pct012n020 variable in sf12000860us29 dataset :

   17 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,003       90.03       90.03
          1 |        677        6.77       96.80
          2 |        168        1.68       98.48
          3 |         72        0.72       99.20
          4 |         23        0.23       99.43
          5 |         18        0.18       99.61
          6 |         11        0.11       99.72
          7 |          7        0.07       99.79
          8 |          4        0.04       99.83
          9 |          1        0.01       99.84
         10 |          3        0.03       99.87
         11 |          1        0.01       99.88
         12 |          2        0.02       99.90
         15 |          2        0.02       99.92
         16 |          1        0.01       99.93
         18 |          1        0.01       99.94
         19 |          1        0.01       99.95
         21 |          1        0.01       99.96
         25 |          1        0.01       99.97
         26 |          1        0.01       99.98
         41 |          1        0.01       99.99
         63 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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