Frequencies for first 10,000 rows of pct012o023 variable in sf12010860us34 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,344       63.44       63.44
          1 |      1,382       13.82       77.26
          2 |        687        6.87       84.13
          3 |        395        3.95       88.08
          4 |        268        2.68       90.76
          5 |        205        2.05       92.81
          6 |        161        1.61       94.42
          7 |        129        1.29       95.71
          8 |        101        1.01       96.72
          9 |         64        0.64       97.36
         10 |         52        0.52       97.88
         11 |         35        0.35       98.23
         12 |         20        0.20       98.43
         13 |         22        0.22       98.65
         14 |         12        0.12       98.77
         15 |         22        0.22       98.99
         16 |          8        0.08       99.07
         17 |          5        0.05       99.12
         18 |         14        0.14       99.26
         19 |          5        0.05       99.31
         20 |          9        0.09       99.40
         21 |         10        0.10       99.50
         22 |          3        0.03       99.53
         23 |          3        0.03       99.56
         24 |          4        0.04       99.60
         26 |          3        0.03       99.63
         27 |          2        0.02       99.65
         28 |          4        0.04       99.69
         29 |          2        0.02       99.71
         30 |          2        0.02       99.73
         32 |          1        0.01       99.74
         33 |          3        0.03       99.77
         34 |          2        0.02       99.79
         36 |          2        0.02       99.81
         37 |          1        0.01       99.82
         38 |          3        0.03       99.85
         39 |          1        0.01       99.86
         41 |          1        0.01       99.87
         42 |          1        0.01       99.88
         43 |          1        0.01       99.89
         46 |          1        0.01       99.90
         49 |          2        0.02       99.92
         50 |          1        0.01       99.93
         52 |          1        0.01       99.94
         57 |          1        0.01       99.95
         58 |          1        0.01       99.96
         60 |          1        0.01       99.97
         67 |          1        0.01       99.98
         78 |          1        0.01       99.99
         92 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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