As I stated before (and showed with links) other then oil/gas, raw commodity prices have VERY little directly to do with the CPI. Finished goods and non-commodity based items/services are the vast majority of the source for calculating the CPI.
2) Yes, commodities increased even after the Great Recession began.
Why would that be?
Obviously if a massive western recession is going on - then commodity prices should collapse. But they didn't. Why? Because of all the huge amounts of 'cheap' money that western governments and central banks (including the Fed's QE1 and 2 over $2.3 trillion) began pouring into their economies starting 2007/08.
Now that QE1 and 2 have faded and the economies (imo) have gotten used to the massive stimuli that government fiscal deficits are providing...the price of commodities has faded somewhat.
Look at the price of oil as an example:
Crude Oil Price History
On Feb. 13/09, it was at $37.51/barrel (from a high of over $125 less then 9 months earlier).
Yet despite the fact that Great Recession was in full swing and oil prices should be continuing to fall or stay as is - what happens?
They start steadily rising to almost double that price by June 12...and it certainly was not because of oil shortages.
It was mostly (imo) 'cheap' money being poured into western economies.
BTW - the massive $1.7 trillion QE1 began in late '08.
And let's not forget Bush's stimuli and TARP and ARRA and $1+ trillion U.S. deficits starting with Bush's last budget, etc....
All this 'cheap' money artificially stimulating economies and stock markets and commodity markets.
And when QE3 is announced, oil and gold/silver and other commodities will jump again.
Heck - they jump even when a rumour of QE3 rears it's head.
Look, you don't want to believe it? Fine...don't.
But the facts and the timelines are too coincidental imo.
You pour trillions of dollars into an economy from outside sources (in this case - a printing press, in essence) and there has to be somewhere for all that money to go. And since interest rates and bond yields are ridiculously low - they are not going into savings and bonds (except the latter when the market panics).
And they are not going into real estate (so far).
What is left?
Equities and commodities.
When QE3 is announced (which I think will not be until after the election - unless the economy collapses before then); assuming it is big (like $700-800 billion at least), then within 3 months, gold/silver will jump by 20% and oil by at least 10-15%. And most other commodities will rise as well (though food stuffs may fall once the American drought ramifications work themselves through the market - imo).