Frequencies for first 10,000 rows of pct012f078 variable in sf12000860us21 dataset :

   75 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,293       92.93       92.93
          1 |        383        3.83       96.76
          2 |        105        1.05       97.81
          3 |         73        0.73       98.54
          4 |         34        0.34       98.88
          5 |         25        0.25       99.13
          6 |         22        0.22       99.35
          7 |          8        0.08       99.43
          8 |         13        0.13       99.56
          9 |          6        0.06       99.62
         10 |          6        0.06       99.68
         11 |          6        0.06       99.74
         12 |          4        0.04       99.78
         13 |          1        0.01       99.79
         14 |          3        0.03       99.82
         15 |          4        0.04       99.86
         16 |          1        0.01       99.87
         17 |          1        0.01       99.88
         18 |          3        0.03       99.91
         19 |          3        0.03       99.94
         21 |          1        0.01       99.95
         23 |          1        0.01       99.96
         24 |          1        0.01       99.97
         25 |          1        0.01       99.98
         27 |          1        0.01       99.99
         28 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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