Frequencies for first 10,000 rows of pct012a099 variable in sf12010860us20 dataset :

   96 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,235       72.35       72.35
          1 |      1,358       13.58       85.93
          2 |        630        6.30       92.23
          3 |        307        3.07       95.30
          4 |        188        1.88       97.18
          5 |        129        1.29       98.47
          6 |         53        0.53       99.00
          7 |         36        0.36       99.36
          8 |         23        0.23       99.59
          9 |         15        0.15       99.74
         10 |         10        0.10       99.84
         11 |          6        0.06       99.90
         12 |          3        0.03       99.93
         13 |          2        0.02       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