Since 2001, Space Adventures has launched seven clients on eight successful missions to the International Space Station (ISS). In April 2001, the company sent American businessman Dennis Tito for a reported $20 million payment, making him the first space tourist. South African businessman Mark Shuttleworth did the same in April 2002, becoming the first African in space. Gregory Olsen became the third private citizen to travel to the ISS in October 2005, followed by the first female space tourist, Anousheh Ansari, who completed her 10-day orbital mission in September 2006. Charles Simonyi, an ex-executive at Microsoft, became the fifth space tourist who visited the ISS in April 2007, then again in March 2009. He is the world's first private space explorer who launched to space twice. In 2008, game developer Richard Garriott, the first second-generation U.S. astronaut, became the sixth client to travel to the ISS. In October 2009, Cirque du Soleil founder, Guy Laliberté, became the first Canadian space tourist to have launched to space.