(see 2020 Summer Olympics changes below). Participants The overwhelming majority of Comiket circle participants are amateur and hobbyist artists: 70% of participating circles lose money, while only 15% turn a profit. The majority of circle participants at Comiket are female, with women composing 57% of participating circles at Comiket 84. General attendees at Comiket tend to skew male, with men comprising 64% of attendees at Comiket 78. Of the Comiket circle participants, a 2011 poll showed that nearly half participated because attending the event and showing off their work is enjoyable, and a significant percentage came to spread their works to the public. A smaller percentage of dōjinshi creators' goal is to promote an idea or opinion through attending Comiket. The majority of those participating in circles in 2010 said that they are a part of a one-person circle (59%), while two-person (20%) and three person (8%) circles were also common. Philanthropy Since 1993, ComiketPC has donated over ¥60 million to sustainable forest management to offset paper used in the production of dōjinshi. Since 2007, ComiketPC has worked with the Japanese Red Cross Society to organize bloodmobiles at Comiket events, with donors given Comiket-exclusive posters depicting characters from anime and video games. The Red Cross receives an estimated 1,500 blood donations at each Comiket. History Comiket was inaugurated in 1975 by , a dōjin circle founded by Yoshihiro Yonezawa, Teruo Harada, and Jun Aniwa while studying at Meiji University. The first Comiket was organized amid a period of immense change and upheaval for manga as a medium, characterized by the closure of the experimental manga magazine COM and the ascendance of the Year 24 Group. A 1975 incident in which a dōjin creator applying for Nihon SF Taikai was refused admission after criticizing the convention's focus on professional guests over dōjin creators in her application became a catalyst for the founding of Comiket as a fan convention. As Comiket grew, a lottery system to allocate exhibition space was implemented in 1979, as the number of applications from circles began to surpass available space. In 1981 the event moved to and began publishing an event catalog in 1982. Comiket would change locations frequently throughout the late 1980s and 1990s, as the Japanese bubble economy led to an upsurge in trade shows that made it difficult to secure a consistent venue. The murders by Tsutomu Miyazaki and subsequent moral panic against otaku