Summary statistics for DNTST_PRTM_CNT variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
DNTST_PRTM~T |     37,813     .001248    .0324847          0       2.61

by Jean Roth , jroth@nber.org , 19 Apr 2019