Frequencies for first 10,000 rows of prov5250 variable in pos1999 dataset :

   srv: oth |
activities- |
     onsite |
     nonres |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,382       73.82       73.82
          N |      2,585       25.85       99.67
          Y |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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