Frequencies for first 10,000 rows of pct012n150 variable in sf12000860us29 dataset :

   43 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,283       92.83       92.83
          1 |        509        5.09       97.92
          2 |         99        0.99       98.91
          3 |         40        0.40       99.31
          4 |         25        0.25       99.56
          5 |         13        0.13       99.69
          6 |          5        0.05       99.74
          7 |          3        0.03       99.77
          8 |          4        0.04       99.81
          9 |          4        0.04       99.85
         10 |          2        0.02       99.87
         11 |          1        0.01       99.88
         12 |          3        0.03       99.91
         14 |          4        0.04       99.95
         15 |          1        0.01       99.96
         23 |          1        0.01       99.97
         29 |          2        0.02       99.99
         38 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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