Frequencies for first 10,000 rows of prov0605 variable in posclia2006 dataset :

intermediar |
   y number |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,547       95.47       95.47
      01030 |        432        4.32       99.79
      01360 |          1        0.01       99.80
      03001 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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