Wow, Gulf ... , congrats, you're a wizard.
With a few years less in the pit and one more mouth to fill, I am looking at maybe one third of what you manage. No Porsche in the garage, no boat on the pavement, no quad on the trailor, just a 4-cyl for the missus.
Even with a tiny little bit of ERP, savings are definitely declining. Extrapolating with real inflation and what has been and might be upped by EK, savings will go extinct by mid 2009.
That will be it then.