Frequencies for first 10,000 rows of pct012n120 variable in sf12010880us33 dataset :

   13 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,916       89.16       89.16
          1 |        691        6.91       96.07
          2 |        214        2.14       98.21
          3 |         83        0.83       99.04
          4 |         41        0.41       99.45
          5 |         16        0.16       99.61
          6 |          9        0.09       99.70
          7 |          3        0.03       99.73
          8 |          7        0.07       99.80
          9 |          6        0.06       99.86
         11 |          2        0.02       99.88
         12 |          2        0.02       99.90
         14 |          2        0.02       99.92
         15 |          1        0.01       99.93
         16 |          1        0.01       99.94
         17 |          1        0.01       99.95
         21 |          1        0.01       99.96
         31 |          1        0.01       99.97
         33 |          1        0.01       99.98
         37 |          1        0.01       99.99
         51 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017