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Calculate Current Value and Shares Since: July 28, 1980

Investment Date:	Original Shares:	Original Value:	Current Shares:	Current Value:	Percent Return:
July 28, 1980	25	$ 1,000.00	1,320	$ 57,701.80	5,670.18%

Investment of $ 1,000.00 on July 28, 1980 would yield $ 57,701.80 today

Adjustments

Date	Reason	Factor	Shares	Price	Value	%
July 28, 1980	Initial Investment		25	40.00	$1,000.00	0.00%
August 18, 1980	Dividend	0.560	25	40.48	$1,026.00	2.60%
October 31, 1980	Dividend	0.560	26	44.24	$1,135.49	13.55%
February 23, 1981	Dividend	0.640	26	36.24	$946.59	(5.34%)
May 18, 1981	Dividend	0.640	27	35.04	$931.96	(6.80%)
August 17, 1981	Dividend	0.640	27	34.72	$940.47	(5.95%)
October 30, 1981	Dividend	0.640	28	34.00	$938.30	(6.17%)
February 22, 1982	Dividend	0.640	28	27.60	$779.34	(22.07%)
May 17, 1982	Dividend	0.640	29	31.28	$901.33	(9.87%)
August 16, 1982	Dividend	0.640	29	27.28	$804.51	(19.55%)
October 29, 1982	Dividend	0.640	30	32.00	$962.58	(3.74%)
February 14, 1983	Dividend	0.640	31	38.24	$1,169.53	16.95%
May 16, 1983	Dividend	0.640	31	42.24	$1,311.44	31.14%
August 15, 1983	Dividend	0.640	31	54.88	$1,723.75	72.38%
September 9, 1983	Stock Split		63	29.00	$1,821.75	82.18%
November 14, 1983	Dividend	0.360	64	28.00	$1,781.55	78.16%
February 17, 1984	Dividend	0.360	64	26.52	$1,710.29	71.03%
May 21, 1984	Dividend	0.360	65	29.52	$1,926.97	92.70%
August 20, 1984	Dividend	0.360	66	24.88	$1,647.59	64.76%
November 16, 1984	Dividend	0.400	67	30.24	$2,029.02	102.90%
February 15, 1985	Dividend	0.400	68	32.36	$2,198.11	119.81%
May 20, 1985	Dividend	0.400	69	33.36	$2,293.21	129.32%
August 19, 1985	Dividend	0.400	70	30.24	$2,106.23	110.62%
November 18, 1985	Dividend	0.440	71	29.64	$2,095.09	109.51%
February 14, 1986	Dividend	0.440	72	28.12	$2,018.75	101.88%
May 19, 1986	Dividend	0.440	73	30.12	$2,193.91	119.39%
August 18, 1986	Dividend	0.440	74	35.00	$2,581.42	158.14%
November 17, 1986	Dividend	0.440	75	37.64	$2,808.58	180.86%
February 13, 1987	Dividend	0.440	75	39.64	$2,990.65	199.07%
May 18, 1987	Dividend	0.440	76	38.00	$2,900.11	190.01%
August 17, 1987	Dividend	0.440	77	43.64	$3,364.13	236.41%
November 16, 1987	Dividend	0.480	78	31.52	$2,466.82	146.68%
February 12, 1988	Dividend	0.480	79	33.24	$2,639.00	163.90%
May 23, 1988	Dividend	0.480	81	30.52	$2,461.16	146.12%
August 15, 1988	Dividend	0.480	82	31.36	$2,567.61	156.76%
November 14, 1988	Dividend	0.480	83	31.52	$2,620.01	162.00%
February 17, 1989	Dividend	0.480	84	32.76	$2,762.98	176.30%
May 22, 1989	Dividend	0.480	86	33.52	$2,867.56	186.76%
August 14, 1989	Dividend	0.480	87	37.12	$3,216.59	221.66%
November 13, 1989	Dividend	0.480	88	36.00	$3,161.13	216.11%
February 16, 1990	Dividend	0.480	89	36.76	$3,270.02	227.00%
May 21, 1990	Dividend	0.480	90	35.00	$3,156.15	215.62%
August 20, 1990	Dividend	0.480	91	34.64	$3,166.97	216.70%
November 16, 1990	Dividend	0.480	93	37.52	$3,474.16	247.42%
February 15, 1991	Dividend	0.480	94	36.24	$3,400.08	240.01%
May 24, 1991	Dividend	0.520	95	38.36	$3,647.77	264.78%
June 18, 1991	Stock Split		190	19.12	$3,636.36	263.64%
August 19, 1991	Dividend	0.260	193	20.50	$3,948.27	294.83%
November 18, 1991	Dividend	0.260	195	22.12	$4,310.35	331.04%
February 14, 1992	Dividend	0.260	197	19.76	$3,901.14	290.11%
May 22, 1992	Dividend	0.260	200	21.76	$4,347.32	334.73%
August 17, 1992	Dividend	0.260	202	24.26	$4,898.73	389.87%
November 16, 1992	Dividend	0.260	204	25.50	$5,201.62	420.16%
February 12, 1993	Dividend	0.260	206	29.38	$6,046.12	504.61%
May 24, 1993	Dividend	0.280	208	30.50	$6,334.22	533.42%
August 16, 1993	Dividend	0.280	209	38.38	$8,028.89	702.89%
November 15, 1993	Dividend	0.280	211	34.50	$7,275.79	627.58%
February 14, 1994	Dividend	0.280	213	31.62	$6,727.47	572.75%
May 23, 1994	Dividend	0.280	215	31.38	$6,735.98	573.60%
August 15, 1994	Dividend	0.280	217	32.26	$6,984.98	598.50%
November 14, 1994	Dividend	0.280	219	27.38	$5,988.98	498.90%
February 17, 1995	Dividend	0.280	221	28.00	$6,185.84	518.58%
May 22, 1995	Dividend	0.280	223	30.12	$6,716.06	571.61%
August 16, 1995	Dividend	0.300	225	28.26	$6,368.22	536.82%
November 15, 1995	Dividend	0.300	228	31.26	$7,111.85	611.19%
February 21, 1996	Dividend	0.300	230	33.00	$7,575.96	657.60%
March 25, 1996	Dividend	1.000	237	32.00	$7,575.96	657.60%
May 29, 1996	Dividend	0.300	239	32.88	$7,855.32	685.53%
August 21, 1996	Dividend	0.300	241	35.76	$8,615.06	761.51%
November 20, 1996	Dividend	0.300	243	38.88	$9,438.98	843.90%
February 19, 1997	Dividend	0.300	245	37.88	$9,269.04	826.90%
May 28, 1997	Dividend	0.300	247	38.76	$9,557.78	855.78%
August 20, 1997	Dividend	0.320	249	39.50	$9,819.16	881.92%
November 19, 1997	Dividend	0.320	251	38.50	$9,650.13	865.01%
February 18, 1998	Dividend	0.320	253	42.82	$10,813.15	981.32%
May 27, 1998	Dividend	0.340	255	39.50	$10,060.63	906.06%
June 16, 1998	Stock Split		509	19.19	$9,775.36	877.54%
August 19, 1998	Dividend	0.170	514	17.75	$9,128.43	812.84%
November 18, 1998	Dividend	0.170	519	19.94	$10,342.12	934.21%
February 17, 1999	Dividend	0.170	524	17.19	$9,003.97	800.40%
May 26, 1999	Dividend	0.170	528	18.94	$10,009.65	900.97%
August 18, 1999	Dividend	0.170	533	18.75	$9,999.08	899.91%
November 17, 1999	Dividend	0.170	538	17.81	$9,588.45	858.85%
February 16, 2000	Dividend	0.170	544	15.13	$8,237.13	723.71%
May 24, 2000	Dividend	0.170	549	19.69	$10,812.26	981.23%
August 16, 2000	Dividend	0.170	554	21.13	$11,696.35	1,069.64%
November 15, 2000	Dividend	0.180	557	27.69	$15,427.22	1,442.72%
February 21, 2001	Dividend	0.180	561	27.90	$15,644.51	1,464.45%
May 23, 2001	Dividend	0.180	564	33.20	$18,717.34	1,771.73%
August 22, 2001	Dividend	0.180	568	23.47	$13,333.28	1,233.33%
November 20, 2001	Dividend	0.180	573	23.10	$13,225.34	1,222.53%
February 20, 2002	Dividend	0.180	577	21.81	$12,589.84	1,158.98%
May 29, 2002	Dividend	0.180	581	28.25	$16,411.24	1,541.12%
August 21, 2002	Dividend	0.180	585	23.50	$13,756.40	1,275.64%
November 20, 2002	Dividend	0.190	590	25.09	$14,798.37	1,379.84%
February 19, 2003	Dividend	0.190	594	28.05	$16,656.28	1,565.63%
May 28, 2003	Dividend	0.190	597	32.57	$19,453.11	1,845.31%
August 20, 2003	Dividend	0.210	601	32.44	$19,500.89	1,850.09%
November 19, 2003	Dividend	0.210	605	33.30	$20,144.11	1,914.41%
February 18, 2004	Dividend	0.210	608	36.35	$22,116.17	2,111.62%
May 26, 2004	Dividend	0.220	612	37.00	$22,645.50	2,164.55%
August 18, 2004	Dividend	0.220	615	40.52	$24,934.53	2,393.45%
November 17, 2004	Dividend	0.220	618	49.62	$30,669.72	2,966.97%
February 16, 2005	Dividend	0.220	621	51.81	$32,159.32	3,115.93%
May 25, 2005	Dividend	0.230	623	59.75	$37,230.57	3,623.06%
August 17, 2005	Dividend	0.230	625	71.56	$44,732.76	4,373.28%
November 16, 2005	Dividend	0.230	627	77.09	$48,333.39	4,733.34%
February 22, 2006	Dividend	0.230	629	74.59	$46,910.16	4,591.02%
May 24, 2006	Dividend	0.240	631	69.84	$44,073.79	4,307.38%
August 16, 2006	Dividend	0.240	633	88.62	$56,076.71	5,507.67%
November 15, 2006	Dividend	0.240	635	82.50	$52,355.98	5,135.60%
February 21, 2007	Dividend	0.240	637	80.10	$50,985.20	4,998.52%
May 23, 2007	Dividend	0.250	638	105.15	$67,089.15	6,608.92%
June 18, 2007	Stock Split		638	110.28	$70,362.26	6,936.23%
June 19, 2007	Stock Split		1,276	54.90	$70,056.00	6,905.60%
August 15, 2007	Dividend	0.123	1,279	47.29	$60,501.46	5,950.15%
November 14, 2007	Dividend	0.123	1,282	53.46	$68,551.90	6,755.19%
February 20, 2008	Dividend	0.123	1,285	56.26	$72,299.43	7,129.94%
May 28, 2008	Dividend	0.123	1,288	64.50	$83,046.04	8,204.60%
August 20, 2008	Dividend	0.123	1,291	51.29	$66,195.42	6,519.54%
November 19, 2008	Dividend	0.125	1,297	26.84	$34,801.32	3,380.13%
February 18, 2009	Dividend	0.125	1,302	31.56	$41,083.44	4,008.34%
May 27, 2009	Dividend	0.125	1,307	32.32	$42,235.50	4,123.55%
August 19, 2009	Dividend	0.125	1,312	33.39	$43,797.12	4,279.71%
November 18, 2009	Dividend	0.130	1,316	41.49	$54,592.27	5,359.23%
February 17, 2010	Dividend	0.130	1,320	42.66	$56,302.80	5,530.28%
March 12, 2010	Current Investment		1,320	43.72	$57,701.80	5,670.18%

*The Investment Calculator page and related information is provided by Mergent, a third party service. Questar Corporation does not maintain this page and is not responsible for the accuracy, completeness or timeliness of the information. The results are for illustrative purposes only and should not be relied on for investment purposes. The timing and price of dividend reinvestments, taxes, commissions and other factors may affect the values shown. Please note that historical investment performance is not intended to indicate future performance.