Frequencies for first 10,000 rows of pct012c007 variable in sf12000860us18 dataset :

    4 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,686       86.86       86.86
          1 |        828        8.28       95.14
          2 |        264        2.64       97.78
          3 |         84        0.84       98.62
          4 |         48        0.48       99.10
          5 |         16        0.16       99.26
          6 |         13        0.13       99.39
          7 |         16        0.16       99.55
          8 |          6        0.06       99.61
          9 |          6        0.06       99.67
         10 |          6        0.06       99.73
         11 |          5        0.05       99.78
         12 |          4        0.04       99.82
         13 |          1        0.01       99.83
         14 |          3        0.03       99.86
         15 |          2        0.02       99.88
         18 |          2        0.02       99.90
         20 |          1        0.01       99.91
         24 |          1        0.01       99.92
         32 |          1        0.01       99.93
         40 |          1        0.01       99.94
         48 |          1        0.01       99.95
         52 |          1        0.01       99.96
         56 |          1        0.01       99.97
         66 |          1        0.01       99.98
         82 |          1        0.01       99.99
         93 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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