Frequencies for first 10,000 rows of pct012k007 variable in sf12010860us30 dataset :

    4 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,997       89.97       89.97
          1 |        736        7.36       97.33
          2 |        149        1.49       98.82
          3 |         52        0.52       99.34
          4 |         21        0.21       99.55
          5 |         14        0.14       99.69
          6 |          4        0.04       99.73
          7 |          2        0.02       99.75
          8 |          6        0.06       99.81
         10 |          2        0.02       99.83
         11 |          1        0.01       99.84
         12 |          1        0.01       99.85
         13 |          1        0.01       99.86
         14 |          1        0.01       99.87
         15 |          2        0.02       99.89
         18 |          1        0.01       99.90
         21 |          2        0.02       99.92
         24 |          1        0.01       99.93
         40 |          1        0.01       99.94
         41 |          1        0.01       99.95
         46 |          1        0.01       99.96
         47 |          1        0.01       99.97
         67 |          1        0.01       99.98
         76 |          1        0.01       99.99
         80 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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