Frequencies for first 10,000 rows of intermediary variable in psfhos201401 dataset :

Intermediar |
   y Number |      Freq.     Percent        Cum.
------------+-----------------------------------
       6001 |        647        6.47        6.47
       6014 |        742        7.42       13.89
       6101 |        137        1.37       15.26
       8101 |          1        0.01       15.27
      11001 |      3,897       38.97       54.24
      14011 |        283        2.83       57.07
      15004 |      4,293       42.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018