Frequencies for first 10,000 rows of pct012c026 variable in sf12010860us22 dataset :

   23 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,400       84.00       84.00
          1 |        929        9.29       93.29
          2 |        326        3.26       96.55
          3 |        141        1.41       97.96
          4 |         65        0.65       98.61
          5 |         36        0.36       98.97
          6 |         26        0.26       99.23
          7 |         15        0.15       99.38
          8 |         13        0.13       99.51
          9 |         12        0.12       99.63
         10 |          8        0.08       99.71
         11 |          8        0.08       99.79
         12 |          3        0.03       99.82
         13 |          2        0.02       99.84
         14 |          1        0.01       99.85
         15 |          2        0.02       99.87
         16 |          1        0.01       99.88
         17 |          1        0.01       99.89
         19 |          1        0.01       99.90
         20 |          1        0.01       99.91
         21 |          2        0.02       99.93
         22 |          1        0.01       99.94
         28 |          1        0.01       99.95
         39 |          1        0.01       99.96
         53 |          1        0.01       99.97
         56 |          1        0.01       99.98
         67 |          1        0.01       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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