Frequencies for first 10,000 rows of pct012k149 variable in sf12000860us26 dataset :

   42 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,645       86.45       86.45
          1 |      1,004       10.04       96.49
          2 |        219        2.19       98.68
          3 |         57        0.57       99.25
          4 |         25        0.25       99.50
          5 |         14        0.14       99.64
          6 |          8        0.08       99.72
          7 |          7        0.07       99.79
          8 |          4        0.04       99.83
          9 |          3        0.03       99.86
         10 |          2        0.02       99.88
         12 |          1        0.01       99.89
         15 |          1        0.01       99.90
         24 |          1        0.01       99.91
         26 |          1        0.01       99.92
         27 |          2        0.02       99.94
         34 |          1        0.01       99.95
         47 |          2        0.02       99.97
         60 |          1        0.01       99.98
         61 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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