Frequencies for first 10,000 rows of pct012e107 variable in sf12010860us24 dataset :

    Under 1 |
       year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,723       97.23       97.23
          1 |        233        2.33       99.56
          2 |         34        0.34       99.90
          3 |          7        0.07       99.97
          4 |          1        0.01       99.98
          6 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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