Summary statistics for mfr_dt variable in demo2006q4 dataset :

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      mfr_dt |     77833    2.01e+07    5657.793   1.93e+07   2.01e+07

by Jean Roth , jroth@nber.org , 18 Dec 2015