Please answer the given financial question based on the context.
Context: the graph below shows a five-year comparison of the cumulative shareholder return on our common stock with the cumulative total return of the standard & poor 2019s ( s&p ) mid cap 400 index and the russell 1000 index , both of which are published indices . comparison of five-year cumulative total return from december 31 , 2011 to december 31 , 2016 assumes $ 100 invested with reinvestment of dividends period indexed returns .
|company/index|baseperiod 12/31/11|baseperiod 12/31/12|baseperiod 12/31/13|baseperiod 12/31/14|baseperiod 12/31/15|12/31/16|
|a . o . smith corporation|100.0|159.5|275.8|292.0|401.0|501.4|
|s&p mid cap 400 index|100.0|117.9|157.4|172.8|169.0|204.1|
|russell 1000 index|100.0|116.4|155.0|175.4|177.0|198.4|
2011 2012 2013 2014 2015 2016 smith ( a o ) corp s&p midcap 400 index russell 1000 index .
Question: what was the difference in total return for the five year period ended 12/31/16 between a . o . smith corporation and the s&p mid cap 400 index?


Answer: The answer is:2.973