Frequencies for first 10,000 rows of pct012c014 variable in sf12000860us18 dataset :

   11 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,523       85.23       85.23
          1 |        983        9.83       95.06
          2 |        264        2.64       97.70
          3 |        102        1.02       98.72
          4 |         42        0.42       99.14
          5 |         15        0.15       99.29
          6 |         17        0.17       99.46
          7 |         10        0.10       99.56
          8 |          7        0.07       99.63
          9 |          8        0.08       99.71
         10 |          7        0.07       99.78
         11 |          3        0.03       99.81
         12 |          1        0.01       99.82
         13 |          2        0.02       99.84
         15 |          3        0.03       99.87
         17 |          1        0.01       99.88
         20 |          1        0.01       99.89
         22 |          1        0.01       99.90
         26 |          1        0.01       99.91
         31 |          2        0.02       99.93
         38 |          1        0.01       99.94
         42 |          1        0.01       99.95
         55 |          1        0.01       99.96
         56 |          1        0.01       99.97
         57 |          1        0.01       99.98
         77 |          1        0.01       99.99
         78 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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