An investor has researched financial information for Fried Chicken Corporation over the past three years. He has provided you a report with the returns for the company.

YEAR	RETURN
2018	4.55%
2019	6.10%
2020	14.27%

The investor put $893.00 into Fried Chicken at the beginning of 2018.

What is the standard deviation for the returns?

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Answer format: Percentage Round to: 2 decimal places (Example: 9.24%, % sign required. Will accept decimal format rounded to 4 decimal places (ex: 0.0924))