Frequencies for first 10,000 rows of pct012g180 variable in sf12010860us26 dataset :

   73 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,359       83.59       83.59
          1 |      1,025       10.25       93.84
          2 |        300        3.00       96.84
          3 |        139        1.39       98.23
          4 |         73        0.73       98.96
          5 |         32        0.32       99.28
          6 |         19        0.19       99.47
          7 |         15        0.15       99.62
          8 |         13        0.13       99.75
          9 |          8        0.08       99.83
         10 |          6        0.06       99.89
         11 |          2        0.02       99.91
         12 |          2        0.02       99.93
         13 |          4        0.04       99.97
         15 |          2        0.02       99.99
         23 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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