Frequencies for first 10,000 rows of pct012f190 variable in sf12000860us21 dataset :

   83 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,483       94.83       94.83
          1 |        280        2.80       97.63
          2 |         96        0.96       98.59
          3 |         45        0.45       99.04
          4 |         23        0.23       99.27
          5 |         17        0.17       99.44
          6 |         16        0.16       99.60
          7 |          6        0.06       99.66
          8 |          7        0.07       99.73
          9 |          9        0.09       99.82
         10 |          4        0.04       99.86
         11 |          3        0.03       99.89
         14 |          1        0.01       99.90
         15 |          1        0.01       99.91
         16 |          1        0.01       99.92
         17 |          2        0.02       99.94
         18 |          5        0.05       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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