Frequencies for first 10,000 rows of pct012l087 variable in sf12000860us27 dataset :

   84 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,504       95.04       95.04
          1 |        332        3.32       98.36
          2 |         88        0.88       99.24
          3 |         28        0.28       99.52
          4 |         18        0.18       99.70
          5 |          8        0.08       99.78
          6 |          6        0.06       99.84
          7 |          6        0.06       99.90
          8 |          3        0.03       99.93
         10 |          2        0.02       99.95
         13 |          1        0.01       99.96
         17 |          1        0.01       99.97
         19 |          1        0.01       99.98
         26 |          1        0.01       99.99
         35 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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