Frequencies for first 10,000 rows of pct012o022 variable in sf12010860us34 dataset :

   19 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,213       62.13       62.13
          1 |      1,432       14.32       76.45
          2 |        695        6.95       83.40
          3 |        427        4.27       87.67
          4 |        292        2.92       90.59
          5 |        217        2.17       92.76
          6 |        151        1.51       94.27
          7 |        123        1.23       95.50
          8 |         81        0.81       96.31
          9 |         61        0.61       96.92
         10 |         38        0.38       97.30
         11 |         44        0.44       97.74
         12 |         45        0.45       98.19
         13 |         25        0.25       98.44
         14 |         24        0.24       98.68
         15 |         18        0.18       98.86
         16 |         11        0.11       98.97
         17 |         13        0.13       99.10
         18 |         10        0.10       99.20
         19 |          9        0.09       99.29
         20 |          4        0.04       99.33
         21 |          4        0.04       99.37
         22 |          4        0.04       99.41
         23 |          7        0.07       99.48
         24 |          3        0.03       99.51
         25 |          2        0.02       99.53
         26 |          3        0.03       99.56
         27 |          2        0.02       99.58
         28 |          1        0.01       99.59
         29 |          2        0.02       99.61
         30 |          2        0.02       99.63
         31 |          2        0.02       99.65
         32 |          3        0.03       99.68
         33 |          2        0.02       99.70
         34 |          4        0.04       99.74
         35 |          1        0.01       99.75
         36 |          2        0.02       99.77
         37 |          3        0.03       99.80
         40 |          1        0.01       99.81
         42 |          1        0.01       99.82
         43 |          1        0.01       99.83
         45 |          2        0.02       99.85
         46 |          2        0.02       99.87
         49 |          1        0.01       99.88
         51 |          1        0.01       99.89
         53 |          2        0.02       99.91
         57 |          2        0.02       99.93
         59 |          3        0.03       99.96
         61 |          1        0.01       99.97
         69 |          1        0.01       99.98
         77 |          1        0.01       99.99
         95 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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