Frequencies for first 10,000 rows of pct012g019 variable in sf12000860us22 dataset :

   16 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,244       62.44       62.44
          1 |      1,475       14.75       77.19
          2 |        622        6.22       83.41
          3 |        399        3.99       87.40
          4 |        290        2.90       90.30
          5 |        186        1.86       92.16
          6 |        127        1.27       93.43
          7 |        101        1.01       94.44
          8 |         92        0.92       95.36
          9 |         67        0.67       96.03
         10 |         54        0.54       96.57
         11 |         35        0.35       96.92
         12 |         31        0.31       97.23
         13 |         27        0.27       97.50
         14 |         29        0.29       97.79
         15 |         22        0.22       98.01
         16 |         20        0.20       98.21
         17 |         20        0.20       98.41
         18 |         18        0.18       98.59
         19 |         14        0.14       98.73
         20 |         10        0.10       98.83
         21 |         13        0.13       98.96
         22 |         10        0.10       99.06
         23 |          9        0.09       99.15
         24 |          6        0.06       99.21
         25 |          5        0.05       99.26
         26 |          9        0.09       99.35
         27 |          7        0.07       99.42
         28 |          6        0.06       99.48
         29 |          7        0.07       99.55
         30 |          4        0.04       99.59
         31 |          2        0.02       99.61
         32 |          6        0.06       99.67
         33 |          2        0.02       99.69
         34 |          3        0.03       99.72
         35 |          2        0.02       99.74
         36 |          4        0.04       99.78
         37 |          3        0.03       99.81
         38 |          1        0.01       99.82
         39 |          1        0.01       99.83
         40 |          3        0.03       99.86
         41 |          2        0.02       99.88
         43 |          1        0.01       99.89
         45 |          1        0.01       99.90
         47 |          1        0.01       99.91
         48 |          1        0.01       99.92
         51 |          1        0.01       99.93
         53 |          1        0.01       99.94
         55 |          1        0.01       99.95
         56 |          1        0.01       99.96
         58 |          1        0.01       99.97
         59 |          1        0.01       99.98
         61 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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