Frequencies for first 10,000 rows of pct012o045 variable in sf12010860us34 dataset :

   42 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,084       70.84       70.84
          1 |      1,449       14.49       85.33
          2 |        617        6.17       91.50
          3 |        332        3.32       94.82
          4 |        193        1.93       96.75
          5 |        117        1.17       97.92
          6 |         77        0.77       98.69
          7 |         52        0.52       99.21
          8 |         22        0.22       99.43
          9 |         20        0.20       99.63
         10 |         14        0.14       99.77
         11 |          4        0.04       99.81
         12 |          4        0.04       99.85
         13 |          4        0.04       99.89
         15 |          1        0.01       99.90
         16 |          2        0.02       99.92
         17 |          1        0.01       99.93
         18 |          2        0.02       99.95
         19 |          1        0.01       99.96
         22 |          1        0.01       99.97
         25 |          1        0.01       99.98
         38 |          1        0.01       99.99
         48 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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