[fredliu]

I would assume that chart is for the US or Western/Developed world. Maybe a more easier explanation for the phenomenon is: everything that can be oursourced/built in lower cost regions are getting cheaper (not many toys, cloths or to a certain degree, cars, are still built in the US), while services, by nature, are not able to be out-sourced. With limited supply and more demand, cost of services would definitely go up.