Frequencies for first 10,000 rows of pct012l084 variable in sf12000860us27 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,321       93.21       93.21
          1 |        428        4.28       97.49
          2 |        129        1.29       98.78
          3 |         50        0.50       99.28
          4 |         23        0.23       99.51
          5 |         12        0.12       99.63
          6 |          7        0.07       99.70
          7 |          5        0.05       99.75
          8 |          4        0.04       99.79
          9 |          5        0.05       99.84
         10 |          4        0.04       99.88
         11 |          3        0.03       99.91
         14 |          3        0.03       99.94
         16 |          1        0.01       99.95
         26 |          1        0.01       99.96
         29 |          1        0.01       99.97
         31 |          1        0.01       99.98
         38 |          1        0.01       99.99
         63 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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