Frequencies for n2 variable in countyct1999 dataset :

  Number of |
 exemptions |
    1040:6d |      Freq.     Percent        Cum.
------------+-----------------------------------
     94,061 |          1       11.11       11.11
    113,443 |          1       11.11       22.22
    140,090 |          1       11.11       33.33
    164,505 |          1       11.11       44.44
    224,900 |          1       11.11       55.56
    690,852 |          1       11.11       66.67
    740,083 |          1       11.11       77.78
    745,156 |          1       11.11       88.89
    2913090 |          1       11.11      100.00
------------+-----------------------------------
      Total |          9      100.00

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