Frequencies for first 10,000 rows of pct012g074 variable in sf12010880us26 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,713       87.13       87.13
          1 |        822        8.22       95.35
          2 |        233        2.33       97.68
          3 |         92        0.92       98.60
          4 |         52        0.52       99.12
          5 |         27        0.27       99.39
          6 |         17        0.17       99.56
          7 |         11        0.11       99.67
          8 |         10        0.10       99.77
          9 |          8        0.08       99.85
         10 |          7        0.07       99.92
         11 |          2        0.02       99.94
         12 |          3        0.03       99.97
         13 |          1        0.01       99.98
         16 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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