Frequencies for first 10,000 rows of pct012o029 variable in sf12000860us30 dataset :

   26 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,441       74.41       74.41
          1 |      1,110       11.10       85.51
          2 |        472        4.72       90.23
          3 |        266        2.66       92.89
          4 |        173        1.73       94.62
          5 |        109        1.09       95.71
          6 |         86        0.86       96.57
          7 |         53        0.53       97.10
          8 |         58        0.58       97.68
          9 |         41        0.41       98.09
         10 |         38        0.38       98.47
         11 |         26        0.26       98.73
         12 |         22        0.22       98.95
         13 |         17        0.17       99.12
         14 |         12        0.12       99.24
         15 |          8        0.08       99.32
         16 |          7        0.07       99.39
         17 |          6        0.06       99.45
         18 |          8        0.08       99.53
         19 |          8        0.08       99.61
         20 |          3        0.03       99.64
         21 |          3        0.03       99.67
         22 |          3        0.03       99.70
         23 |          1        0.01       99.71
         24 |          1        0.01       99.72
         25 |          3        0.03       99.75
         26 |          4        0.04       99.79
         27 |          1        0.01       99.80
         28 |          4        0.04       99.84
         29 |          3        0.03       99.87
         30 |          1        0.01       99.88
         31 |          1        0.01       99.89
         32 |          3        0.03       99.92
         33 |          1        0.01       99.93
         34 |          3        0.03       99.96
         39 |          1        0.01       99.97
         40 |          1        0.01       99.98
         42 |          1        0.01       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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