Summary statistics for primaryid variable in ther2018q2 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    688,053    1.82e+08    1.97e+08   3.76e+07   1.49e+09

by Jean Roth , jroth@nber.org , 8 Sep 2018