Summary statistics for c_1_c7_03975 variable in hcris2552_96_2005 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
c_1_c7_03975 |          1        1971           .       1971       1971

by Jean Roth , jroth@nber.org , 9 Sep 2018