Summer Olympic Games from a 42-event competition with fewer than 250 male competitors from 14 nations in 1896, to 306 events with 11,238 competitors (6,179 men, 5,059 women) from 206 nations in 2016. The Summer Olympics has been hosted on five continents by a total of nineteen countries. The United States has hosted the Games four times (in 1904, 1932, 1984 and 1996); this is more times than any other nation. The Games have been held three times in the United Kingdom (in 1908, 1948 and 2012); twice each in Greece (1896, 2004), France (1900, 1924), Germany (1936, 1972) and Australia (1956, 2000);
Summer Olympic Games federal government; the country's economic crisis; health and safety concerns surrounding the Zika virus and significant pollution in the Guanabara Bay; and a state-sponsored doping scandal involving Russia, which affected the participation of its athletes in the Games. Tokyo, Japan will host the 2020 Summer Olympics, making it the first Asian city to host the Olympic Games twice. Forty-two sports, spanning 55 disciplines, have been part of the Olympic program at one point or another. Twenty-eight sports have comprised the schedule for three of the recent games, 2000, 2004, and 2008 Summer Olympics. Due to the removal of baseball and