Frequencies for first 10,000 rows of pct012o150 variable in sf12010860us34 dataset :

   43 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,967       69.67       69.67
          1 |      1,426       14.26       83.93
          2 |        618        6.18       90.11
          3 |        355        3.55       93.66
          4 |        208        2.08       95.74
          5 |        149        1.49       97.23
          6 |         76        0.76       97.99
          7 |         54        0.54       98.53
          8 |         51        0.51       99.04
          9 |         22        0.22       99.26
         10 |         19        0.19       99.45
         11 |         14        0.14       99.59
         12 |         16        0.16       99.75
         13 |          6        0.06       99.81
         14 |          4        0.04       99.85
         15 |          2        0.02       99.87
         16 |          2        0.02       99.89
         17 |          4        0.04       99.93
         19 |          1        0.01       99.94
         20 |          1        0.01       99.95
         26 |          2        0.02       99.97
         31 |          1        0.01       99.98
         43 |          1        0.01       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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