Use the figure shown below to estimate the relative velocity at which relativistic effects become important.Be sure to explain and justify your reasoning. 
Definitions:
Full Employment GDP
The output level of goods and services in an economy when all available labor resources are being used in the most economically efficient way.
Equilibrium GDP
The gross domestic product level where aggregate supply equals aggregate demand, indicating a stable economy.
Inflationary Gap
A situation where aggregate demand in an economy exceeds aggregate supply, leading to inflation and a higher levels of spending than what is supported by production.
Federal Budget Deficit
The shortfall that occurs when the United States federal government's expenditures exceed its revenues within a fiscal year.
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