Frequencies for first 10,000 rows of pct012i099 variable in sf12010860us28 dataset :

   96 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,374       73.74       73.74
          1 |      1,330       13.30       87.04
          2 |        602        6.02       93.06
          3 |        283        2.83       95.89
          4 |        164        1.64       97.53
          5 |        118        1.18       98.71
          6 |         48        0.48       99.19
          7 |         26        0.26       99.45
          8 |         21        0.21       99.66
          9 |         10        0.10       99.76
         10 |          9        0.09       99.85
         11 |          7        0.07       99.92
         12 |          2        0.02       99.94
         13 |          1        0.01       99.95
         14 |          3        0.03       99.98
         16 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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