Frequencies for first 10,000 rows of pct012k060 variable in sf12000860us26 dataset :

   57 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,211       92.11       92.11
          1 |        635        6.35       98.46
          2 |        106        1.06       99.52
          3 |         19        0.19       99.71
          4 |         11        0.11       99.82
          5 |          3        0.03       99.85
          6 |          1        0.01       99.86
          7 |          4        0.04       99.90
          8 |          1        0.01       99.91
         12 |          1        0.01       99.92
         13 |          1        0.01       99.93
         15 |          2        0.02       99.95
         22 |          2        0.02       99.97
         35 |          1        0.01       99.98
         36 |          1        0.01       99.99
         55 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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