Frequencies for first 10,000 rows of metallevel variable in plan2018 dataset :

    Metal Level |      Freq.     Percent        Cum.
----------------+-----------------------------------
         Bronze |      1,524       15.24       15.24
   Catastrophic |        229        2.29       17.53
Expanded Bronze |        475        4.75       22.28
           Gold |      1,493       14.93       37.21
           High |        771        7.71       44.92
            Low |        825        8.25       53.17
       Platinum |        188        1.88       55.05
         Silver |      4,495       44.95      100.00
----------------+-----------------------------------
          Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 23 May 2018