Frequencies for first 10,000 rows of prov0605 variable in posclia2009 dataset :

intermediar |
   y number |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,529       95.29       95.29
      00000 |        111        1.11       96.40
      01030 |        348        3.48       99.88
      01360 |          1        0.01       99.89
      03001 |          9        0.09       99.98
      03102 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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