Frequencies for first 10,000 rows of pct012k155 variable in sf12000860us26 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,808       88.08       88.08
          1 |        860        8.60       96.68
          2 |        217        2.17       98.85
          3 |         68        0.68       99.53
          4 |         19        0.19       99.72
          5 |          5        0.05       99.77
          6 |          2        0.02       99.79
          7 |          7        0.07       99.86
         10 |          1        0.01       99.87
         11 |          1        0.01       99.88
         12 |          1        0.01       99.89
         19 |          1        0.01       99.90
         20 |          1        0.01       99.91
         21 |          1        0.01       99.92
         24 |          1        0.01       99.93
         28 |          1        0.01       99.94
         33 |          2        0.02       99.96
         46 |          1        0.01       99.97
         50 |          1        0.01       99.98
         53 |          1        0.01       99.99
         74 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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