Frequencies for first 10,000 rows of pct012n043 variable in sf12000860us29 dataset :

   40 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,244       92.44       92.44
          1 |        495        4.95       97.39
          2 |        115        1.15       98.54
          3 |         47        0.47       99.01
          4 |         39        0.39       99.40
          5 |         11        0.11       99.51
          6 |         16        0.16       99.67
          7 |          3        0.03       99.70
          8 |          2        0.02       99.72
          9 |          3        0.03       99.75
         10 |          3        0.03       99.78
         11 |          3        0.03       99.81
         12 |          1        0.01       99.82
         13 |          3        0.03       99.85
         14 |          1        0.01       99.86
         15 |          1        0.01       99.87
         16 |          3        0.03       99.90
         18 |          1        0.01       99.91
         19 |          1        0.01       99.92
         21 |          1        0.01       99.93
         22 |          1        0.01       99.94
         23 |          1        0.01       99.95
         24 |          1        0.01       99.96
         25 |          1        0.01       99.97
         31 |          1        0.01       99.98
         35 |          1        0.01       99.99
         59 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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