In March 2001, a German court rejected compensation complaints from Slovakia's surviving Jews from the Holocaust. Claims were rejected again in 2002. In 2003, Slovak Jews made a collective claim of 77 million euros to Germany. The 2003 lawsuit filed against Germany by the Central Union of Jewish Religious Communities in the Slovak Republic (UZZNO) was made to reclaim compensation for monies paid by the wartime Slovak government to Germany to cover the cost of Germany's deportation of 57,000 members of the country's Jewish population. The following state visits have occurred in recent times: German Federal President Horst Köhler visited Slovakia on 2 November 2005. German Chancellor Angela Merkel paid her first official visit to the Slovak Republic on 11 May 2006. President Ivan Gašparovič visited Germany in July 2006. In the same month, the new Slovak Foreign Minister Kubiš paid his first official visit to Berlin. Prime Minister Robert Fico visited Germany in April 2007. Germany is Slovakia's largest trading partner. In 2003, Germany was the biggest investor in Slovakia, with its volume of direct investment at about 1.94 billion euro as of March 31, 2003. At the time, Germany made 26.4% of all foreign direct investments in Slovakia. This trend has continued in 2009, around 400 German firms are active in Slovakia investing 2.5 billion euro, making Germany is the biggest investor in Slovakia. In 1991, Volkswagen AG opened a factory in Bratislava. Revenue from the plant in 2003 was 4.5 billion euro. By 2006, the company had invested 1.3 billion EUR in its operations and employed 9,000 staff at the time. In April 2009, Volkswagen AG announced plans to build a new compact family vehicle in Slovakia. The company will invest about 308 million euros. VW currently builds its Touareg, Škoda Octavia  as well as its Audi Q7 in Bratislava and employs about 7,800 people in the nation, which has emerged a major hub in the global car industry. Porsche also builds its Cayenne model in Bratislava. In 1997, the two countries signed a military cooperation agreement. In 2003, an e-government partnership was developed between the countries with the assistance of Siemens and Microsoft. Key bilateral agreements include those on social insurance (instrument of ratification signed on 17 October 2003) and on road transport (signed on 14 June 2002).