Frequencies for first 10,000 rows of pct012e009 variable in sf12000860us20 dataset :

    6 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,771       97.71       97.71
          1 |        195        1.95       99.66
          2 |         27        0.27       99.93
          3 |          3        0.03       99.96
          4 |          2        0.02       99.98
          5 |          1        0.01       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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