Frequencies for first 10,000 rows of pct012g075 variable in sf12000860us22 dataset :

   72 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,744       87.44       87.44
          1 |        792        7.92       95.36
          2 |        232        2.32       97.68
          3 |        101        1.01       98.69
          4 |         45        0.45       99.14
          5 |         33        0.33       99.47
          6 |         15        0.15       99.62
          7 |         14        0.14       99.76
          8 |         14        0.14       99.90
          9 |          4        0.04       99.94
         10 |          3        0.03       99.97
         11 |          1        0.01       99.98
         15 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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