Frequencies for first 10,000 rows of PCT012B091 variable in sf12000860us17 dataset :

   88 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,514       85.14       85.14
          1 |        761        7.61       92.75
          2 |        287        2.87       95.62
          3 |        140        1.40       97.02
          4 |         96        0.96       97.98
          5 |         51        0.51       98.49
          6 |         41        0.41       98.90
          7 |         28        0.28       99.18
          8 |         22        0.22       99.40
          9 |         12        0.12       99.52
         10 |          9        0.09       99.61
         11 |          8        0.08       99.69
         12 |          6        0.06       99.75
         13 |          5        0.05       99.80
         14 |          4        0.04       99.84
         15 |          4        0.04       99.88
         16 |          1        0.01       99.89
         17 |          2        0.02       99.91
         18 |          1        0.01       99.92
         19 |          1        0.01       99.93
         21 |          2        0.02       99.95
         23 |          1        0.01       99.96
         26 |          1        0.01       99.97
         27 |          2        0.02       99.99
         39 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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