Frequencies for first 10,000 rows of pct012k019 variable in sf12010860us30 dataset :

   16 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,794       87.94       87.94
          1 |        839        8.39       96.33
          2 |        241        2.41       98.74
          3 |         63        0.63       99.37
          4 |         17        0.17       99.54
          5 |          9        0.09       99.63
          6 |          9        0.09       99.72
          7 |          3        0.03       99.75
          8 |          5        0.05       99.80
          9 |          2        0.02       99.82
         10 |          2        0.02       99.84
         11 |          1        0.01       99.85
         12 |          1        0.01       99.86
         13 |          2        0.02       99.88
         14 |          1        0.01       99.89
         28 |          1        0.01       99.90
         29 |          2        0.02       99.92
         32 |          1        0.01       99.93
         42 |          1        0.01       99.94
         51 |          1        0.01       99.95
         53 |          2        0.02       99.97
         64 |          1        0.01       99.98
         93 |          1        0.01       99.99
         94 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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