Summary statistics for partdpremiumobligationwith75prem variable in planreport2015 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
partd~75prem |     36,493    20.30272    64.90146          0     1018.2

by Jean Roth , jroth@nber.org , 14 Apr 2016