Question: The Iduapriem Gold Mine is an open-pit gold mine situated 10 km south of Tarkwa, the mine is owned by AngloGold Ashanti Limited, a global gold mining company, was formed in which year?

Context paragraphs:
AngloGold Ashanti: AngloGold Ashanti Limited is a global gold mining company.  It was formed in 2004 by the merger of AngloGold and the Ashanti Goldfields Corporation.

Sadiola Gold Mine: The Sadiola Gold Mine is an open-pit gold mine situated near Sadiola, in the Kayes Region of Mali.  The operation is jointly owned by AngloGold Ashanti and Iamgold, who each have an effective holding of 41%, while the Government of Mali owns the remaining 18%.  The International Finance Corporation originally held 6% of the mine put sold this share equally to Anglo and Iamgold in December 2009.

Yatela Mine: The Yatela Mine is an open-pit gold mine situated near Yatela, 25 km north of Sadiola, in the Kayes Region of Mali.  It is a single-pit operation.  Commencing operation in 2001, heap leaching together with carbon-loading is carried out at a rate of approximately 2.9 million tonnes per year.  The final step of eluting carbon and smelting the gold in the gold recovery process is completed at the Sadiola Gold Mine.

Gatsuurt Gold Mine: Gatsuurt Gold Mine is an open-pit gold mining site in Mongolia located about 110 kilometers (70 mi) north of the capital Ulaanbaatar in Mandal sum (district) of Selenge Province in northern Mongolia.  Gatsuurt gold mine is 35 kilometers east of Boroo Gold Mine.

Boroo Gold Mine: Boroo Gold Mine is an open-pit gold mining site in Mongolia located about 110 km (70 mi) west-northwest of the capital Ulaanbaatar in Bayangol and Mandal sums (districts) of Selenge Province in northern Mongolia.  Gatsuurt Gold Mine is 35 E from Boroo Gold Mine.

Morila Gold Mine: The Morila Gold Mine is an open-pit gold mine situated 180 km south of Bamako, near the community of Sanso, in the Sikasso Region of Mali.  The operation is jointly owned by AngloGold Ashanti and Randgold Resources, who each have an effective holding of 40% through jointly-owned Morila Limited, while the Government of Mali owns the remaining 20%.

Iduapriem Gold Mine: The Iduapriem Gold Mine is an open-pit gold mine situated 10 km south of Tarkwa, in the Western Region of Ghana.  The mine is owned by AngloGold Ashanti and consists of the Iduapriem and the Teberebie operation, which were merged in 2000.  AngloGold Ashanti originally only owned 85% of the mine but acquired the remaining 15% in September 2007.

Cripple Creek &amp; Victor Gold Mine: The Cripple Creek & Victor Gold Mine, formerly and historically the Cresson Mine, is an active gold mine located near the town of Victor, in the Cripple Creek mining district in the US state of Colorado.  It is the largest current producer of gold in Colorado, and produced 211,000 troy ounces of gold in 2014.  It was fully owned and operated by AngloGold Ashanti through its subsidiary, the Cripple Creek & Victor Gold Mining Company (CC&V).  In June 2015, AngloGold agreed to sell the mine to Newmont Mining Corporation.  The purchase by Newmont was completed in August 2015.

Kumtor Gold Mine: The Kumtor gold mine (Kyrgyz: Кумтөр , ] ; Russian: Кумтор ) is an open-pit gold mining site in Issyk-Kul Region of Kyrgyzstan located about 350 km (220 mi) southeast of the capital Bishkek and 80 km (50 mi) south of Lake Issyk-Kul near the border with China.  Located in Tian Shan mountains at more than 4,000 m (14,000 ft) above sea level, Kumtor is the second-highest gold mining operation in the world after Yanacocha gold mine in Peru.

Serra Grande Gold Mine: The Serra Grande Gold Mine is a gold mine located 5 km from Crixás, in the Goiás state of Brazil.  It is jointly owned by AngloGold Ashanti and Kinross Gold Corporation, who are equal partners.  The mine is operated by AngloGold Ashanti but revenue is spread evenly between the two companies.

Supporting paragraphs: Iduapriem Gold Mine AngloGold Ashanti
Answer: 2004