Frequencies for first 10,000 rows of pct012n063 variable in sf12000860us29 dataset :

   60 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,700       97.00       97.00
          1 |        229        2.29       99.29
          2 |         45        0.45       99.74
          3 |          7        0.07       99.81
          4 |          9        0.09       99.90
          5 |          3        0.03       99.93
          6 |          2        0.02       99.95
          8 |          2        0.02       99.97
          9 |          2        0.02       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017