Question: What was the 2018 population of the host of the 1920 Summer Olympics, that involved the country housing the organization that Congress refused to let the US join?

<P0-S0> ice hockey is a sport that is contested at the winter olympic games. <P0-S1> a men's ice hockey tournament has been held every winter olympics (starting in 1924); an ice hockey tournament was also held at the 1920 summer olympics. <P0-S2> from 1920 to 1968, the olympics also acted as the ice hockey world championships, and the two events occurred concurrently. <P0-S3> from 1920 until 1984, only amateur athletes were allowed to compete in the tournament, and players from the national hockey league (nhl) were not allowed to compete. <P0-S4> the countries that benefited most were the soviet bloc countries of eastern europe, where top athletes were state - sponsored while retaining their status as amateurs. <P0-S5> in 1970, after a disagreement over the definition of amateur players, canada withdrew from the tournament and did not send a team to the 1972 or 1976 winter olympics. <P0-S6> in 1986, the international olympic committee (ioc) decided to allow professional athletes to compete in the olympics, and starting in 1998, the nhl allowed its players to participate. <P0-S7> women's ice hockey was added in 1992 and the first tournament was held at the 1998 winter olympics. <P0-S8> both events have been held at every olympic games since. <SEP> <P1-S0> Kingdom of Belgium Koninkrijk België (Dutch) Royaume de Belgique (French) Königreich Belgien (German) Flag Coat of arms Motto: ``Eendracht maakt macht ''(Dutch)`` L'union fait la force'' (French) ``Einigkeit macht stark ''(German)`` Unity makes Strength'' Anthem: ``La Brabançonne ''`` The Brabantian'' Location of Belgium (dark green) -- in Europe (green & dark grey) -- in the European Union (green) Capital and largest city Brussels 50 ° 51 ′ N 4 ° 21 ′ E ﻿ / ﻿ 50.850 ° N 4.350 ° E ﻿ / 50.850; 4.350 Official languages Dutch French German Ethnic groups see Demographics Religion (2015) 60.7% Christianity 32.0% No religion 5.2% Islam 2.1% Other religions Demonym Belgian Government Federal parliamentary constitutional monarchy Monarch Philippe Prime Minister Charles Michel Legislature Federal Parliament Upper house Senate Lower house Chamber of Representatives Independence (from the Netherlands) Declared 4 October 1830 Recognised 19 April 1839 Area Total 30,528 km (11,787 sq mi) (136th) Water (%) 6.4 Population 1 August 2018 census 11,420,163 (79th) Density 374.2 / km (969.2 / sq mi) (36th) GDP (PPP) 2018 estimate Total $550.664 billion (38th) Per capita $48,258 (20th) GDP (nominal) 2016 estimate Total $562.229 billion (23rd) Per capita $49,272 (17th) Gini (2011) 26.3 low HDI (2017) 0.916 very high 17th Currency Euro (€) (EUR) Time zone UTC + 1 (CET) Summer (DST) UTC + 2 (CEST) Driving side right Calling code + 32 ISO 3166 code BE Internet TLD. <P1-S1> be The flag's official proportions of 13: 15 are rarely seen; proportions of 2: 3 or similar are more common. <P1-S2> The Brussels region is the de facto capital, but the City of Brussels municipality is the de jure capital. <P1-S3> The. <P1-S4> eu domain is also used, as it is shared with other European Union member states. <SEP> <P2-S0> A large number of international institutions have their seats in Switzerland, in part because of its policy of neutrality. <P2-S1> Geneva is the birthplace of the Red Cross and Red Crescent Movement and the Geneva Conventions and, since 2006, hosts the United Nations Human Rights Council. <P2-S2> Even though Switzerland is one of the most recent countries to have joined the United Nations, the Palace of Nations in Geneva is the second biggest centre for the United Nations after New York, and Switzerland was a founding member and home to the League of Nations. <SEP> <P3-S0> After the costly U.S. involvement in World War I, isolationism grew within the nation. <P3-S1> Congress refused membership in the League of Nations, and in response to the growing turmoil in Europe and Asia, the gradually more restrictive Neutrality Acts were passed, which were intended to prevent the U.S. from supporting either side in a war. <P3-S2> President Franklin D. Roosevelt sought to support Britain, however, and in 1940 signed the Lend-Lease Act, which permitted an expansion of the "cash and carry" arms trade to develop with Britain, which controlled the Atlantic sea lanes. <SEP> <P4-S0> Switzerland competed at the 1920 Summer Olympics in Antwerp, Belgium. <P4-S1> 77 competitors, all men, took part in 45 events in 13 sports. <SEP> <P5-S0> yury nikandrov (22 november 1923 – 21 december 2018) was a russian sport shooter who competed in the 1952 summer olympics, in the 1956 summer olympics, and in the 1960 summer olympics.