Frequencies for first 10,000 rows of prov4470 variable in posclia2001 dataset :

   prov4470 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,988       89.88       89.88
          A |        261        2.61       92.49
          B |         24        0.24       92.73
          C |        153        1.53       94.26
          D |         35        0.35       94.61
          E |         94        0.94       95.55
          F |         60        0.60       96.15
          G |         33        0.33       96.48
          H |         67        0.67       97.15
          I |          7        0.07       97.22
          J |          4        0.04       97.26
          V |        274        2.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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