Frequencies for first 10,000 rows of pct012c145 variable in sf12010860us22 dataset :

   38 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,419       84.19       84.19
          1 |      1,004       10.04       94.23
          2 |        299        2.99       97.22
          3 |        114        1.14       98.36
          4 |         64        0.64       99.00
          5 |         34        0.34       99.34
          6 |         21        0.21       99.55
          7 |         12        0.12       99.67
          8 |          5        0.05       99.72
          9 |          7        0.07       99.79
         10 |          3        0.03       99.82
         11 |          3        0.03       99.85
         12 |          1        0.01       99.86
         14 |          2        0.02       99.88
         15 |          2        0.02       99.90
         20 |          1        0.01       99.91
         21 |          1        0.01       99.92
         30 |          1        0.01       99.93
         32 |          1        0.01       99.94
         42 |          1        0.01       99.95
         45 |          1        0.01       99.96
         52 |          1        0.01       99.97
         67 |          1        0.01       99.98
         87 |          1        0.01       99.99
         91 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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