Frequencies for first 10,000 rows of pct012g175 variable in sf12000860us22 dataset :

   68 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,413       84.13       84.13
          1 |        950        9.50       93.63
          2 |        290        2.90       96.53
          3 |        114        1.14       97.67
          4 |         53        0.53       98.20
          5 |         46        0.46       98.66
          6 |         27        0.27       98.93
          7 |         20        0.20       99.13
          8 |         22        0.22       99.35
          9 |         14        0.14       99.49
         10 |         15        0.15       99.64
         11 |          8        0.08       99.72
         12 |          9        0.09       99.81
         13 |          8        0.08       99.89
         14 |          2        0.02       99.91
         15 |          2        0.02       99.93
         16 |          3        0.03       99.96
         17 |          1        0.01       99.97
         18 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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