Frequencies for trnsmtl_num variable in prds_hosp10_yr2012 dataset :

trnsmtl_num |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          3        0.05        0.05
          A |         76        1.22        1.27
          B |      3,510       56.37       57.64
          C |      1,883       30.24       87.88
          D |        395        6.34       94.22
          E |        197        3.16       97.38
          F |         80        1.28       98.67
          G |         31        0.50       99.16
          H |         13        0.21       99.37
          I |          9        0.14       99.52
          J |          2        0.03       99.55
          L |          1        0.02       99.57
          Z |         27        0.43      100.00
------------+-----------------------------------
      Total |      6,227      100.00

by Jean Roth , jroth@nber.org , 24 Aug 2018