Frequencies for first 10,000 rows of hpid variable in plan2017 dataset :

       HPID |
  (National |
Health Plan |
Identifier) |      Freq.     Percent        Cum.
------------+-----------------------------------
   7.00e+09 |        104        1.04        1.04
   7.02e+09 |         25        0.25        1.29
   7.08e+09 |         48        0.48        1.77
   7.08e+09 |         10        0.10        1.87
   7.11e+09 |        560        5.60        7.47
   7.11e+09 |         96        0.96        8.43
   7.19e+09 |         25        0.25        8.68
   7.27e+09 |        191        1.91       10.59
   7.35e+09 |        108        1.08       11.67
   7.35e+09 |         35        0.35       12.02
   7.39e+09 |         15        0.15       12.17
   7.47e+09 |         72        0.72       12.89
   7.70e+09 |        132        1.32       14.21
   7.72e+09 |        208        2.08       16.29
   7.73e+09 |        229        2.29       18.58
   7.81e+09 |          1        0.01       18.59
   7.82e+09 |         66        0.66       19.25
   7.89e+09 |         10        0.10       19.35
   7.91e+09 |         20        0.20       19.55
   7.93e+09 |         37        0.37       19.92
          . |      8,008       80.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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