M1 money growth in the U.S. was about 16% in 2008, 7% in 2009, and 9% in 2010. Over the same time period, the yield on a 3-month Treasury bills fell from almost 3% to close to 0%. Given these high rates of money growth, why did interest rates fall, rather than increase? What does this say about the income, price-level, and expected-inflation effects