Frequencies for first 10,000 rows of pct012g178 variable in sf12010860us26 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,266       82.66       82.66
          1 |      1,077       10.77       93.43
          2 |        329        3.29       96.72
          3 |        134        1.34       98.06
          4 |         74        0.74       98.80
          5 |         33        0.33       99.13
          6 |         25        0.25       99.38
          7 |         15        0.15       99.53
          8 |          4        0.04       99.57
          9 |         16        0.16       99.73
         10 |          8        0.08       99.81
         11 |          1        0.01       99.82
         12 |          3        0.03       99.85
         13 |          6        0.06       99.91
         14 |          1        0.01       99.92
         15 |          2        0.02       99.94
         17 |          2        0.02       99.96
         18 |          1        0.01       99.97
         19 |          1        0.01       99.98
         20 |          1        0.01       99.99
         21 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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