Stryker Corporation is a leading medical technology company headquartered in Kalamazoo, Michigan, that trades on the New York Stock Exchange. Following are selected nancial data for Stryker for the period 2009 to 2013.

2009	2010	2011	2012	2013
Profit margin (%)	15.7	16.7	15.7	14.5	10.7
Retention ratio (%)	81.5	80.4	78.7	74.5	59.7
Asset turnover (X)	0.70	0.70	0.70	0.70	0.60
Financial leverage (X)	1.70	1.70	1.70	1.70	1.80
Growth rate in sales (%)	.9	7.7	12.4	3.2	3.7

Source: Data from Stryker 2009 to 2013 annual reports.

Calculate Strykers annual sustainable growth rate from 2009 through 2013.

Note: Round your answers to 1 decimal place.

Year Sustainable Growth Rate

2009 ? %

2010 ? %

2011 ? %

2012 ? %

2013 ? %