Summary statistics for primaryid variable in ther2016q1 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    460,110    1.30e+08    1.02e+08   3.35e+07   1.19e+09

by Jean Roth , jroth@nber.org , 6 Apr 2017