Frequencies for first 10,000 rows of prov4470 variable in posclia1997 dataset :

   prov4470 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,368       83.68       83.68
          A |        367        3.67       87.35
          B |        140        1.40       88.75
          C |        121        1.21       89.96
          D |        104        1.04       91.00
          E |        135        1.35       92.35
          F |         57        0.57       92.92
          G |         45        0.45       93.37
          H |         86        0.86       94.23
          I |          8        0.08       94.31
          J |          5        0.05       94.36
          V |        564        5.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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