Frequencies for first 10,000 rows of pct012n051 variable in sf12000860us29 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,418       94.18       94.18
          1 |        420        4.20       98.38
          2 |         81        0.81       99.19
          3 |         31        0.31       99.50
          4 |         16        0.16       99.66
          5 |          9        0.09       99.75
          6 |          7        0.07       99.82
          7 |          3        0.03       99.85
          8 |          3        0.03       99.88
          9 |          1        0.01       99.89
         10 |          1        0.01       99.90
         11 |          1        0.01       99.91
         12 |          1        0.01       99.92
         13 |          1        0.01       99.93
         14 |          1        0.01       99.94
         17 |          1        0.01       99.95
         22 |          1        0.01       99.96
         24 |          2        0.02       99.98
         25 |          1        0.01       99.99
         26 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017