Was Great Recession the period of severest unemployment? Given the above question, please answer with reasoning first!

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The Great Recession had an unemployment peak of 10%. The Great Depression saw global GDP decline by almost 30% and unemployment approach 25%. US unemployment numbers approached 15% in May 2020 due to the Coronavirus.
Therefore, the answer is no.