Frequencies for first 10,000 rows of pct012f081 variable in sf12000860us21 dataset :

   78 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,450       94.50       94.50
          1 |        293        2.93       97.43
          2 |         91        0.91       98.34
          3 |         55        0.55       98.89
          4 |         33        0.33       99.22
          5 |         21        0.21       99.43
          6 |         17        0.17       99.60
          7 |         11        0.11       99.71
          8 |          5        0.05       99.76
          9 |          3        0.03       99.79
         10 |          6        0.06       99.85
         11 |          3        0.03       99.88
         12 |          3        0.03       99.91
         13 |          1        0.01       99.92
         14 |          3        0.03       99.95
         16 |          1        0.01       99.96
         18 |          1        0.01       99.97
         19 |          1        0.01       99.98
         21 |          1        0.01       99.99
         22 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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