Frequencies for a00100 variable in countyct1999 dataset :

   Adjusted |
      gross |
     income |
      (AGI) |
  1040:37 / |
 1040A:21 / |
   1040EZ:4 |      Freq.     Percent        Cum.
------------+-----------------------------------
    1898800 |          1       11.11       11.11
    3132429 |          1       11.11       22.22
    4094733 |          1       11.11       33.33
    4661921 |          1       11.11       44.44
    5761981 |          1       11.11       55.56
   1.78e+07 |          1       11.11       66.67
   2.08e+07 |          1       11.11       77.78
   3.68e+07 |          1       11.11       88.89
   9.50e+07 |          1       11.11      100.00
------------+-----------------------------------
      Total |          9      100.00

by Jean Roth , jroth@nber.org , 23 Jun 2017