Calculate GDP growing rate quarterly and exact GDP quarter amount?

Question

Base on table one, the growing rate in 1Q of 2007 is 0.1%. From table two, I try this formula to get "0.1%", but where I can get truly GDP output in Q4, 2006 from table two? Or, I am using wrong data, wrong formula?

(2007 I - 2006 IV) / GDP output in Q4, 2006

Table one

http://www.bea.gov/national/nipaweb/TableView.asp?SelectedTable=1&Freq=Qtr&FirstYear=2006&LastYear=2008

Table two

http://www.bea.gov/national/nipaweb/TableView.asp?SelectedTable=6&Freq=Qtr&FirstYear=2006&LastYear=2008

Answer 1

I see what you mean.

The rates are annualized, so it isn't straight math.

Answer 2

You can not get this change from given data - draw your attention to the fact what this data is "Seasonally adjusted annual rates", thus it is flattened between quarters of the same year. So in order to get percentage changes between periods you should take initial data for real GDP which is not seasonally adjusted.

This concept is stated in "FOOTNOTE" paragraph here: http://www.bea.gov/newsreleases/national...

But your formula will work if you will choose annual GDP instead of quarterly or monthly option.