GENZ: Genzyme Corporation Yearly Stock Returns

Year	Beginning Price	Ending Price	Gain or Loss	Percent Gain or Loss
1987	8.00	8.25	0.25	3.13%
1988	8.25	8.25	0	0.00%
1989	8.25	14.50	6.25	75.76%
1990	14.50	28.625	14.125	97.41%
1991	28.625	58.75	30.125	105.24%
1992	58.75	45.25	-13.50	-22.98%
1993	45.25	27.50	-17.75	-39.23%
1994	27.50	31.50	4.00	14.55%
1995	31.50	62.375	30.875	98.02%
1996	62.375	43.50*	-18.875	-30.26%
1997	21.75	27.75	6.00	27.59%
1998	27.75	49.75	22.00	79.28%
1999	49.75	45.00	-4.75	-9.55%
2000	45.00	89.4375	44.9375	99.86%
2001	89.4375	119.72*	29.7825	33.11%
2002	59.86	29.57	-30.29	-50.60%
2003	29.57	49.29	19.72	66.69%
2004	49.29	58.07	8.78	17.81%
2005	58.07	70.78	12.71	21.89%
2006	70.78	61.58	-9.20	-13.00%
2007	61.58	74.44	12.86	20.88%
2008	74.44	66.37	-8.07	-10.84%
2009	66.37	49.01	-17.36	-26.16%
2010	49.01	71.20	22.19	45.28%
2011	71.20	74.00**	2.80	3.93%

*The 1996 ending price for Genzyme has been adjusted for a 2 for 1 stock split.
*The 2001 ending price for Genzyme has been adjusted for a 2 for 1 stock split.
**On April 18, 2011 Sanofi-Aventis completed its acquisition of Genzyme for $74.00 per share.

Calculations do not reflect any dividends paid or any stock spinoffs from original stock. Taxes and commissions are not factored into calculations. Data is property of 1stock1 and written permission must be granted before redistributing any data (in part or in whole).