Frequencies for first 10,000 rows of pct012e107 variable in sf12000860us20 dataset :

    Under 1 |
       year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,744       97.44       97.44
          1 |        217        2.17       99.61
          2 |         33        0.33       99.94
          3 |          5        0.05       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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