Frequencies for first 10,000 rows of pct012k107 variable in sf12000860us26 dataset :

    Under 1 |
       year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,019       90.19       90.19
          1 |        681        6.81       97.00
          2 |        172        1.72       98.72
          3 |         53        0.53       99.25
          4 |         24        0.24       99.49
          5 |         15        0.15       99.64
          6 |          6        0.06       99.70
          7 |          8        0.08       99.78
          8 |          2        0.02       99.80
          9 |          3        0.03       99.83
         11 |          3        0.03       99.86
         12 |          1        0.01       99.87
         14 |          1        0.01       99.88
         16 |          1        0.01       99.89
         17 |          2        0.02       99.91
         19 |          1        0.01       99.92
         23 |          1        0.01       99.93
         29 |          1        0.01       99.94
         43 |          1        0.01       99.95
         47 |          1        0.01       99.96
         68 |          1        0.01       99.97
         71 |          1        0.01       99.98
         84 |          1        0.01       99.99
         87 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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