PROC ARIMA for multiple zip codes in one step?

[MBI]

Hello,

I have annual sales data from 2001 to 2009 for several hundred zip codes. Is there a way to forecast next year's sales for each of these zip codes?

I know how to use PROC ARIMA to do one zip code at a time but is there a way to do them all at once?

Thanks,

-MBI

[MBI]

Ah, ok ... after a bit more research it looks like I can do it using the 'BY' statement. Can someone confirm this? Thanks!