Summary statistics for uswbo19ages dataset :

by Jean Roth , jroth@nber.org , 2 Jan 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year | 14,191,176    1993.401      13.917       1969       2016
          st |          0
      stfips |          0
      county |          0
    registry | 14,191,176     86.0077    25.79658          1         99
-------------+---------------------------------------------------------
        race | 14,191,176    1.900341    .8319449          1          3
    hispanic | 14,191,176           9           0          9          9
         sex | 14,191,176    1.501705    .4999971          1          2
         age | 14,191,176    8.667354     5.34283          0         18
         pop | 14,191,176    882.0933     4266.55          1     374236

by Jean Roth , jroth@nber.org , 2 Jan 2018