Frequencies for first 10,000 rows of hpid variable in plan2014 dataset :

       HPID |
  (National |
Health Plan |
Identifier) |      Freq.     Percent        Cum.
------------+-----------------------------------
   7.00e+09 |         68        0.68        0.68
   7.02e+09 |         52        0.52        1.20
   7.04e+09 |          8        0.08        1.28
   7.08e+09 |         16        0.16        1.44
   7.11e+09 |        166        1.66        3.10
   7.27e+09 |        428        4.28        7.38
   7.31e+09 |         20        0.20        7.58
   7.33e+09 |         20        0.20        7.78
   7.36e+09 |        262        2.62       10.40
   7.39e+09 |         12        0.12       10.52
   7.48e+09 |          5        0.05       10.57
   7.50e+09 |         36        0.36       10.93
   7.60e+09 |         86        0.86       11.79
   7.72e+09 |        207        2.07       13.86
   7.73e+09 |        251        2.51       16.37
   7.78e+09 |        127        1.27       17.64
   7.83e+09 |        299        2.99       20.63
   7.89e+09 |         16        0.16       20.79
   7.91e+09 |          3        0.03       20.82
   7.93e+09 |         12        0.12       20.94
          . |      7,906       79.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017