Frequencies for first 10,000 rows of pct012k040 variable in sf12000860us26 dataset :

   37 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,675       86.75       86.75
          1 |        963        9.63       96.38
          2 |        229        2.29       98.67
          3 |         66        0.66       99.33
          4 |         25        0.25       99.58
          5 |         14        0.14       99.72
          6 |          7        0.07       99.79
          7 |          4        0.04       99.83
          8 |          2        0.02       99.85
          9 |          3        0.03       99.88
         11 |          1        0.01       99.89
         13 |          1        0.01       99.90
         15 |          1        0.01       99.91
         16 |          1        0.01       99.92
         21 |          1        0.01       99.93
         22 |          1        0.01       99.94
         24 |          1        0.01       99.95
         36 |          1        0.01       99.96
         46 |          1        0.01       99.97
         62 |          1        0.01       99.98
         75 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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