Frequencies for first 10,000 rows of pct012o184 variable in sf12010860us34 dataset :

   77 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,920       89.20       89.20
          1 |        809        8.09       97.29
          2 |        206        2.06       99.35
          3 |         39        0.39       99.74
          4 |         11        0.11       99.85
          5 |          8        0.08       99.93
          6 |          3        0.03       99.96
          7 |          1        0.01       99.97
          8 |          1        0.01       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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