Frequencies for first 10,000 rows of prov0605 variable in posclia2010 dataset :

intermediar |
   y number |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,533       95.33       95.33
      00000 |        113        1.13       96.46
      01030 |        345        3.45       99.91
      01360 |          1        0.01       99.92
      03001 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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