Frequencies for first 10,000 rows of pct012k048 variable in sf12010860us30 dataset :

   45 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,610       86.10       86.10
          1 |      1,028       10.28       96.38
          2 |        215        2.15       98.53
          3 |         70        0.70       99.23
          4 |         37        0.37       99.60
          5 |         10        0.10       99.70
          6 |          8        0.08       99.78
          7 |          5        0.05       99.83
          8 |          1        0.01       99.84
          9 |          1        0.01       99.85
         10 |          3        0.03       99.88
         11 |          1        0.01       99.89
         12 |          2        0.02       99.91
         17 |          1        0.01       99.92
         24 |          1        0.01       99.93
         31 |          1        0.01       99.94
         40 |          1        0.01       99.95
         42 |          1        0.01       99.96
         52 |          1        0.01       99.97
         55 |          1        0.01       99.98
         56 |          1        0.01       99.99
         86 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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