Frequencies for first 10,000 rows of pct012g064 variable in sf12010880us26 dataset :

   61 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,899       78.99       78.99
          1 |      1,098       10.98       89.97
          2 |        427        4.27       94.24
          3 |        208        2.08       96.32
          4 |         94        0.94       97.26
          5 |         71        0.71       97.97
          6 |         48        0.48       98.45
          7 |         39        0.39       98.84
          8 |         18        0.18       99.02
          9 |         18        0.18       99.20
         10 |         17        0.17       99.37
         11 |         10        0.10       99.47
         12 |         11        0.11       99.58
         13 |          7        0.07       99.65
         14 |          8        0.08       99.73
         15 |          6        0.06       99.79
         16 |          4        0.04       99.83
         17 |          3        0.03       99.86
         18 |          2        0.02       99.88
         19 |          2        0.02       99.90
         20 |          3        0.03       99.93
         21 |          2        0.02       99.95
         22 |          1        0.01       99.96
         25 |          2        0.02       99.98
         28 |          1        0.01       99.99
         34 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017