A consumer expenditure survey reports the following information on consumer protein spending: 
Using 2016 as the base year, by how much does a "cost of protein" index increase between 2016 and 2017?
Definitions:
Required Return
The minimum return that an investor expects to receive from an investment to compensate for its risk.
Stock Price
The cost of purchasing a share of a company's stock on the open market.
Constant Growth Rate
A stable rate at which a company's dividends or earnings are expected to grow over time, often used in valuation models.
Required Return
The lowest profit an investor anticipates making from an investment in a specific asset, considering its associated risk.
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