Frequencies for first 10,000 rows of pct012o156 variable in sf12010860us34 dataset :

   49 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,979       69.79       69.79
          1 |      1,452       14.52       84.31
          2 |        616        6.16       90.47
          3 |        343        3.43       93.90
          4 |        205        2.05       95.95
          5 |        144        1.44       97.39
          6 |         82        0.82       98.21
          7 |         58        0.58       98.79
          8 |         38        0.38       99.17
          9 |         27        0.27       99.44
         10 |         17        0.17       99.61
         11 |          8        0.08       99.69
         12 |          6        0.06       99.75
         13 |          6        0.06       99.81
         14 |          4        0.04       99.85
         15 |          4        0.04       99.89
         16 |          3        0.03       99.92
         18 |          1        0.01       99.93
         19 |          3        0.03       99.96
         23 |          1        0.01       99.97
         25 |          1        0.01       99.98
         43 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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