Frequencies for first 10,000 rows of pct012099 variable in sf12000860us14 dataset :

   96 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,505       75.05       75.05
          1 |      1,432       14.32       89.37
          2 |        579        5.79       95.16
          3 |        230        2.30       97.46
          4 |        104        1.04       98.50
          5 |         61        0.61       99.11
          6 |         30        0.30       99.41
          7 |         21        0.21       99.62
          8 |         14        0.14       99.76
          9 |         12        0.12       99.88
         10 |          4        0.04       99.92
         11 |          2        0.02       99.94
         12 |          2        0.02       99.96
         13 |          2        0.02       99.98
         16 |          1        0.01       99.99
         20 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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