Frequencies for first 10,000 rows of pct012c046 variable in sf12010860us22 dataset :

   43 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,326       83.26       83.26
          1 |      1,077       10.77       94.03
          2 |        319        3.19       97.22
          3 |        143        1.43       98.65
          4 |         57        0.57       99.22
          5 |         25        0.25       99.47
          6 |          9        0.09       99.56
          7 |         11        0.11       99.67
          8 |          3        0.03       99.70
          9 |          7        0.07       99.77
         10 |          2        0.02       99.79
         11 |          4        0.04       99.83
         12 |          1        0.01       99.84
         13 |          4        0.04       99.88
         17 |          3        0.03       99.91
         18 |          1        0.01       99.92
         23 |          1        0.01       99.93
         28 |          2        0.02       99.95
         32 |          1        0.01       99.96
         39 |          1        0.01       99.97
         46 |          1        0.01       99.98
         55 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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