From the end of 2010 to the end of 2011, M1 increased from $2,006 billion to $2,311 billion. By what percentage did M1 increase?

15.20%

Explanation:

The computation of the M1 increase is shown below:

= (M1 End of the year 2011  - M1 end of the year 2010) ÷ M1 End of the year 2010

= ($2,311 billion - $2,006 billion) ÷ ($2,006 billion)

= 15.20%

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