Frequencies for first 10,000 rows of pct012c153 variable in sf12010860us22 dataset :

   46 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,226       82.26       82.26
          1 |      1,156       11.56       93.82
          2 |        332        3.32       97.14
          3 |        140        1.40       98.54
          4 |         51        0.51       99.05
          5 |         37        0.37       99.42
          6 |         17        0.17       99.59
          7 |         10        0.10       99.69
          8 |          4        0.04       99.73
          9 |          3        0.03       99.76
         10 |          4        0.04       99.80
         11 |          2        0.02       99.82
         12 |          3        0.03       99.85
         13 |          2        0.02       99.87
         17 |          3        0.03       99.90
         20 |          2        0.02       99.92
         24 |          1        0.01       99.93
         26 |          1        0.01       99.94
         37 |          1        0.01       99.95
         39 |          1        0.01       99.96
         41 |          2        0.02       99.98
         59 |          1        0.01       99.99
         83 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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