Frequencies for first 10,000 rows of pct012g072 variable in sf12010860us26 dataset :

   69 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,284       82.84       82.84
          1 |      1,112       11.12       93.96
          2 |        304        3.04       97.00
          3 |        136        1.36       98.36
          4 |         44        0.44       98.80
          5 |         38        0.38       99.18
          6 |         17        0.17       99.35
          7 |         25        0.25       99.60
          8 |         11        0.11       99.71
          9 |         13        0.13       99.84
         10 |          4        0.04       99.88
         11 |          2        0.02       99.90
         12 |          2        0.02       99.92
         13 |          3        0.03       99.95
         14 |          2        0.02       99.97
         17 |          1        0.01       99.98
         18 |          1        0.01       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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