Frequencies for first 10,000 rows of hpid variable in plan2015 dataset :

       HPID |
  (National |
Health Plan |
Identifier) |      Freq.     Percent        Cum.
------------+-----------------------------------
   7.00e+09 |        133        1.33        1.33
   7.02e+09 |        103        1.03        2.36
   7.27e+09 |        268        2.68        5.04
   7.31e+09 |          2        0.02        5.06
   7.50e+09 |          9        0.09        5.15
   7.73e+09 |        181        1.81        6.96
   7.82e+09 |         54        0.54        7.50
   7.83e+09 |         39        0.39        7.89
   7.89e+09 |         12        0.12        8.01
   7.91e+09 |         26        0.26        8.27
          . |      9,173       91.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Dec 2017