Don't worry about the big decrease of the commodity prices. The main reason in my view is that the world economy is slowing down while commodity producer have spend billions of money to wide their production. They searched and explored new mines and increased their output.
As a result we see a massive price decline. But if you believe in long-term growth, you should know the cyclic of the commodity sector.
Here you can see the price fluctuations of the past decade...
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10 Year Commodity Return (click to enlarge) |