st: out of sample prediction after xtreg

[Francie Eikermann Streich <fstreich@umich.edu>]

Hi,

I have a panel dataset spanning all 50 states and the years 1990-2007.  
I am running a fixed effects regression using "xtreg y x1 x2..., fe"  
on the years 1990-2000. I then want to use these estimates to predict  
the outcome variable in the years 2001-2007.
I would like to use "predict yhat, xbu" after running this regression,  
but this only generates predictions in sample (i.e. for 1990-2000).  
How can I get predicted values out of sample?
Thanks,
Francie
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