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Inflation by product and service since 1998

This graph from Mark J. Perry shows the price change of different products and services since 1998. 

Thus, if you are deciding what major/career you should be doing,  and you only care about wages, based on this graph and assuming trends will continue, you should choose the one more service oriented, less open to international competition and more likely to be controlled by the government.
 Healthcare seems a safe bet.

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