Forecasting Quarterly Data

[1800bigk]

If you had to forecast quarterly data, what SAS procedures would you start with?  The data is somewhat seasonal meaning that it has peaks and then returns to a steady state but the time between peaks is random and the steady state that it returns to may differ from previous steady states.  The quarterly data that I am trying to forecast is relatively new (8 years or so, with most activity 2008 on.)

We use proc arima to forecast other things here, but those things have a lot more history and they follow regular seasons.  To use arima I would need 12 years of good data and it's just not there for this project.

What else should I look into?

[goladin]

How about using PROC FORECAST?

Regards,

Murphy