Frequencies for first 10,000 rows of pct012g173 variable in sf12010860us26 dataset :

   66 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,820       78.20       78.20
          1 |      1,241       12.41       90.61
          2 |        414        4.14       94.75
          3 |        197        1.97       96.72
          4 |        117        1.17       97.89
          5 |         60        0.60       98.49
          6 |         37        0.37       98.86
          7 |         21        0.21       99.07
          8 |         13        0.13       99.20
          9 |         12        0.12       99.32
         10 |         16        0.16       99.48
         11 |          9        0.09       99.57
         12 |          8        0.08       99.65
         13 |          9        0.09       99.74
         14 |          5        0.05       99.79
         15 |          3        0.03       99.82
         16 |          3        0.03       99.85
         17 |          4        0.04       99.89
         18 |          6        0.06       99.95
         19 |          4        0.04       99.99
         21 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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