SIAL: Sigma-Aldrich Corporation Yearly Stock Returns

Year	Beginning Price	Ending Price	Gain or Loss	Percent Gain or Loss
1976	26.50	20.75	-5.75	-21.70%
1977	20.75	21.50	0.75	3.61%
1978	21.50	30.50	9.00	41.86%
1979	30.50	39.25	8.75	28.69%
1980	39.25	50.00	10.75	27.39%
1981	50.00	61.00	11.00	22.00%
1982	61.00	80.50*	19.50	31.97%
1983	40.25	49.50	9.25	22.98%
1984	49.50	51.50	2.00	4.04%
1985	51.50	84.50	33.00	64.08%
1986	84.50	113.25*	28.75	34.02%
1987	37.75	44.50	6.75	17.88%
1988	44.50	47.25	2.75	6.18%
1989	47.25	57.75	10.50	22.22%
1990	57.75	58.75	1.00	1.73%
1991	58.75	106.00*	47.25	80.43%
1992	53.00	57.50	4.50	8.49%
1993	57.50	48.00	-9.50	-16.52%
1994	48.00	33.00	-15.00	-31.25%
1995	33.00	49.50	16.50	50.00%
1996	49.50	62.4375	12.9375	26.14%
1997	62.4375	79.50*	17.0625	27.33%
1998	39.75	29.375	-10.375	-26.10%
1999	29.375	30.0625	0.6875	2.34%
2000	30.0625	39.3125	9.25	30.77%
2001	39.3125	39.41	0.0975	0.25%
2002	39.41	48.70	9.29	23.57%
2003	48.70	57.18	8.48	17.41%
2004	57.18	60.46	3.28	5.74%
2005	60.46	63.29	2.83	4.68%
2006	63.29	77.72	14.43	22.80%
2007	77.72	109.20*	31.48	40.50%
2008	54.60	42.24	-12.36	-22.64%
2009	42.24	50.55	8.31	19.67%
2010	50.55	66.56	16.01	31.67%
2011	66.56	62.46	-4.10	-6.16%
2012	62.46	73.58	11.12	17.80%
2013	73.58	94.01	20.43	27.77%
2014	94.01	137.27	43.26	46.02%
2015	137.27	140.00*	2.73	1.99%

*The 1982 ending price for Sigma-Aldrich has been adjusted for a 2 for 1 stock split.
*The 1986 ending price for Sigma-Aldrich has been adjusted for a 3 for 1 stock split.
*The 1991 ending price for Sigma-Aldrich has been adjusted for a 2 for 1 stock split.
*The 1997 ending price for Sigma-Aldrich has been adjusted for a 2 for 1 stock split.
*The 2007 ending price for Sigma-Aldrich has been adjusted for a 2 for 1 stock split.
*In 2015 Merck KGaA completed its acquisition of Sigma-Aldrich for $140 per share.