Frequencies for first 10,000 rows of pct012l196 variable in sf12000860us27 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,598       95.98       95.98
          1 |        297        2.97       98.95
          2 |         52        0.52       99.47
          3 |         20        0.20       99.67
          4 |         13        0.13       99.80
          5 |          8        0.08       99.88
          6 |          4        0.04       99.92
          7 |          1        0.01       99.93
          8 |          2        0.02       99.95
         10 |          1        0.01       99.96
         13 |          1        0.01       99.97
         14 |          1        0.01       99.98
         20 |          1        0.01       99.99
         46 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017