Frequencies for first 10,000 rows of benefittype variable in planreport2013 dataset :

                   Benefit Type |      Freq.     Percent        Cum.
--------------------------------+-----------------------------------
                                |      4,391       43.91       43.91
Actuarially Equivalent Standard |        174        1.74       45.65
              Basic Alternative |        928        9.28       54.93
       Defined Standard Benefit |      1,519       15.19       70.12
           Enhanced Alternative |      2,988       29.88      100.00
--------------------------------+-----------------------------------
                          Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016