Frequencies for first 10,000 rows of prov4190 variable in posclia2009 dataset :

 non-profit |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      9,829       98.29       98.29
          Y |        171        1.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016