Frequencies for first 10,000 rows of pct012k163 variable in sf12000860us26 dataset :

   56 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,156       91.56       91.56
          1 |        660        6.60       98.16
          2 |        120        1.20       99.36
          3 |         33        0.33       99.69
          4 |          7        0.07       99.76
          5 |          6        0.06       99.82
          6 |          3        0.03       99.85
          7 |          1        0.01       99.86
          9 |          1        0.01       99.87
         10 |          2        0.02       99.89
         11 |          1        0.01       99.90
         12 |          2        0.02       99.92
         13 |          1        0.01       99.93
         16 |          1        0.01       99.94
         25 |          1        0.01       99.95
         26 |          1        0.01       99.96
         30 |          1        0.01       99.97
         35 |          1        0.01       99.98
         37 |          1        0.01       99.99
         48 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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