Frequencies for first 10,000 rows of pct012k182 variable in sf12010860us30 dataset :

   75 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,575       95.75       95.75
          1 |        360        3.60       99.35
          2 |         45        0.45       99.80
          3 |          6        0.06       99.86
          4 |          3        0.03       99.89
          5 |          1        0.01       99.90
          6 |          1        0.01       99.91
          9 |          1        0.01       99.92
         11 |          1        0.01       99.93
         15 |          2        0.02       99.95
         17 |          1        0.01       99.96
         19 |          1        0.01       99.97
         21 |          1        0.01       99.98
         23 |          1        0.01       99.99
         36 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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