Frequencies for first 10,000 rows of pct012k052 variable in sf12000860us26 dataset :

   49 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,848       88.48       88.48
          1 |        870        8.70       97.18
          2 |        184        1.84       99.02
          3 |         48        0.48       99.50
          4 |         18        0.18       99.68
          5 |         10        0.10       99.78
          6 |          5        0.05       99.83
          8 |          2        0.02       99.85
         10 |          4        0.04       99.89
         11 |          2        0.02       99.91
         16 |          1        0.01       99.92
         17 |          1        0.01       99.93
         26 |          1        0.01       99.94
         27 |          1        0.01       99.95
         30 |          1        0.01       99.96
         33 |          1        0.01       99.97
         42 |          1        0.01       99.98
         51 |          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