Frequencies for first 10,000 rows of pct012g128 variable in sf12010860us26 dataset :

   21 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,125       61.25       61.25
          1 |      1,297       12.97       74.22
          2 |        614        6.14       80.36
          3 |        340        3.40       83.76
          4 |        283        2.83       86.59
          5 |        202        2.02       88.61
          6 |        193        1.93       90.54
          7 |        114        1.14       91.68
          8 |        122        1.22       92.90
          9 |         91        0.91       93.81
         10 |         82        0.82       94.63
         11 |         64        0.64       95.27
         12 |         51        0.51       95.78
         13 |         53        0.53       96.31
         14 |         42        0.42       96.73
         15 |         37        0.37       97.10
         16 |         25        0.25       97.35
         17 |         26        0.26       97.61
         18 |         25        0.25       97.86
         19 |         29        0.29       98.15
         20 |         19        0.19       98.34
         21 |         24        0.24       98.58
         22 |         16        0.16       98.74
         23 |         14        0.14       98.88
         24 |         12        0.12       99.00
         25 |         11        0.11       99.11
         26 |          6        0.06       99.17
         27 |          7        0.07       99.24
         28 |          7        0.07       99.31
         29 |          6        0.06       99.37
         30 |          7        0.07       99.44
         31 |          4        0.04       99.48
         32 |          2        0.02       99.50
         33 |          5        0.05       99.55
         34 |          1        0.01       99.56
         35 |          3        0.03       99.59
         36 |          2        0.02       99.61
         37 |          2        0.02       99.63
         38 |          1        0.01       99.64
         39 |          1        0.01       99.65
         41 |          1        0.01       99.66
         42 |          8        0.08       99.74
         44 |          2        0.02       99.76
         47 |          2        0.02       99.78
         48 |          2        0.02       99.80
         49 |          3        0.03       99.83
         50 |          2        0.02       99.85
         52 |          2        0.02       99.87
         54 |          1        0.01       99.88
         56 |          2        0.02       99.90
         58 |          1        0.01       99.91
         63 |          2        0.02       99.93
         64 |          1        0.01       99.94
         65 |          2        0.02       99.96
         68 |          1        0.01       99.97
         70 |          1        0.01       99.98
         77 |          1        0.01       99.99
         86 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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