Frequencies for first 10,000 rows of pct012o155 variable in sf12000860us30 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,482       74.82       74.82
          1 |      1,326       13.26       88.08
          2 |        482        4.82       92.90
          3 |        270        2.70       95.60
          4 |        134        1.34       96.94
          5 |         86        0.86       97.80
          6 |         53        0.53       98.33
          7 |         45        0.45       98.78
          8 |         22        0.22       99.00
          9 |         21        0.21       99.21
         10 |         19        0.19       99.40
         11 |          7        0.07       99.47
         12 |          8        0.08       99.55
         13 |          8        0.08       99.63
         14 |          7        0.07       99.70
         15 |         10        0.10       99.80
         16 |          3        0.03       99.83
         17 |          1        0.01       99.84
         18 |          4        0.04       99.88
         19 |          1        0.01       99.89
         21 |          1        0.01       99.90
         22 |          2        0.02       99.92
         23 |          1        0.01       99.93
         24 |          2        0.02       99.95
         26 |          1        0.01       99.96
         27 |          2        0.02       99.98
         29 |          1        0.01       99.99
         68 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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