Frequencies for first 10,000 rows of limitunit variable in bencs2016 dataset :

                     Limit Unit |      Freq.     Percent        Cum.
--------------------------------+-----------------------------------
                                |      8,648       86.48       86.48
                  Days per Year |        127        1.27       87.75
               Dollars per Year |         36        0.36       88.11
               Item(s) per Year |        126        1.26       89.37
       Procedure(s) per 2 Years |          4        0.04       89.41
Procedure(s) per Benefit Period |          4        0.04       89.45
       Treatment(s) per 3 Years |          2        0.02       89.47
      Treatment(s) per Lifetime |         41        0.41       89.88
     Treatment(s) per Procedure |          2        0.02       89.90
          Treatment(s) per Year |          2        0.02       89.92
           Visit(s) per 3 Years |         12        0.12       90.04
          Visit(s) per 6 Months |        213        2.13       92.17
    Visit(s) per Benefit Period |         24        0.24       92.41
              Visit(s) per Year |        759        7.59      100.00
--------------------------------+-----------------------------------
                          Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Oct 2016