Frequencies for first 10,000 rows of pct012k160 variable in sf12000860us26 dataset :

   53 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,946       89.46       89.46
          1 |        813        8.13       97.59
          2 |        150        1.50       99.09
          3 |         45        0.45       99.54
          4 |         21        0.21       99.75
          5 |          3        0.03       99.78
          6 |          3        0.03       99.81
          7 |          1        0.01       99.82
          8 |          3        0.03       99.85
          9 |          2        0.02       99.87
         11 |          1        0.01       99.88
         13 |          2        0.02       99.90
         15 |          2        0.02       99.92
         19 |          1        0.01       99.93
         24 |          1        0.01       99.94
         25 |          1        0.01       99.95
         26 |          1        0.01       99.96
         37 |          1        0.01       99.97
         41 |          1        0.01       99.98
         47 |          1        0.01       99.99
         63 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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