I don't recall saying the G8
Your post of 18th February 2009 09:39 PM. You should be able to see it if you scroll back up the page a bit.
Is this aggregate of individual drops??
The GDP of the G8 is the sum of the GDPs of the constituent countries of the G8, yes? So, if the sum of the GDPs in future is 30% less than the sum now, then it's reasonable to say that the G8's GDP has dropped 30% over that period. It doesn't have to be difficult.
If you meant something else when you said "
the nominal GDP for the G8 will drop 30-40%", then please let us know.
Let's say it will get 30% down from recession started Q1 2007 and sometime before first quarter 2011
You originally claimed 30-40%, so I'll hold you to the 35% midpoint, since you have the luxury of choosing the timescale (I'm surprised that you want to move the starting point back to 2007Q1, as I doubt it helps your case, but hey... I'm happy to accommodate)
So, from 2007Q1 to 2009Q1. Got a preferred source for quarterly numbers? If not, we'll have to settle for 2007-2011.
Now, how much would you like to bet?