Frequencies for first 10,000 rows of pct012g064 variable in sf12000860us22 dataset :

   61 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,140       81.40       81.40
          1 |      1,072       10.72       92.12
          2 |        345        3.45       95.57
          3 |        142        1.42       96.99
          4 |         74        0.74       97.73
          5 |         63        0.63       98.36
          6 |         27        0.27       98.63
          7 |         31        0.31       98.94
          8 |         22        0.22       99.16
          9 |         21        0.21       99.37
         10 |          8        0.08       99.45
         11 |         10        0.10       99.55
         12 |          8        0.08       99.63
         13 |          9        0.09       99.72
         14 |          8        0.08       99.80
         15 |          5        0.05       99.85
         16 |          5        0.05       99.90
         17 |          3        0.03       99.93
         18 |          1        0.01       99.94
         19 |          2        0.02       99.96
         22 |          2        0.02       99.98
         23 |          1        0.01       99.99
         29 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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