Frequencies for first 10,000 rows of pct012k162 variable in sf12010860us30 dataset :

   55 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,690       86.90       86.90
          1 |        974        9.74       96.64
          2 |        213        2.13       98.77
          3 |         74        0.74       99.51
          4 |         19        0.19       99.70
          5 |          6        0.06       99.76
          6 |          3        0.03       99.79
          7 |          2        0.02       99.81
          8 |          4        0.04       99.85
         10 |          2        0.02       99.87
         11 |          1        0.01       99.88
         13 |          1        0.01       99.89
         20 |          1        0.01       99.90
         21 |          1        0.01       99.91
         23 |          1        0.01       99.92
         26 |          2        0.02       99.94
         28 |          1        0.01       99.95
         37 |          1        0.01       99.96
         50 |          1        0.01       99.97
         68 |          1        0.01       99.98
         72 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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