Frequencies for first 10,000 rows of pct012k066 variable in sf12000860us26 dataset :

   63 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,443       94.43       94.43
          1 |        481        4.81       99.24
          2 |         45        0.45       99.69
          3 |         13        0.13       99.82
          4 |          3        0.03       99.85
          5 |          5        0.05       99.90
          6 |          2        0.02       99.92
          8 |          1        0.01       99.93
          9 |          1        0.01       99.94
         11 |          1        0.01       99.95
         12 |          1        0.01       99.96
         14 |          1        0.01       99.97
         21 |          1        0.01       99.98
         22 |          1        0.01       99.99
         25 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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