The numbers were probably fudged a bit. When you consider that the population keeps growing and inflation is around 4% that does not mean squat.
It will be interesting to see what kind of changes in population are indicated after the Census results are in.
Population grows at a rate of ~0.5% per year due to births and another ~0.5% per year due to immigration (legal and illegal). Thus, in all GDP numbers you need to realize that 1% of the growth is due to population change. I've been pushing for population change to be included in the official GDP number but no one would listen to a lowly person like me.
Inflation is no where near 4%. I don't know what you are smoking.
First, GDP already includes inflation adjustment. If inflation were really 4%, then the economy grew at 9.7% and inflation adjusted it is 5.7%. We all know that didn't happen. And you don't double count for inflation like you are implying.
Second, we know what the GDP is.
Look here! The average price of a basket of goods over all of 2008 was 215.3 and the average price of the same basket of goods over all of 2009 was 214.5. Thus prices dropped by an average of 0.4%. Dropped, not gained. -0.4% not 4%. Look at that very bottom number on the right hand side: -0.4%.
But if you don't like that -0.4% measure, due to gas price spike, try this on for size. Try looking at Dec 2007 vs Dec 2009 (dates which EXCLUDE the peak in 2008). The average inflation in the two years was 1.4%. That 1.4% is the lowest since the 1960s. Inflation isn't 4%, inflation is quite low.