Frequencies for first 10,000 rows of pct012k109 variable in sf12010880us30 dataset :

    2 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,279       92.79       92.79
          1 |        540        5.40       98.19
          2 |        108        1.08       99.27
          3 |         50        0.50       99.77
          4 |          9        0.09       99.86
          5 |          5        0.05       99.91
          6 |          1        0.01       99.92
          7 |          3        0.03       99.95
          8 |          2        0.02       99.97
          9 |          1        0.01       99.98
         14 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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