The data below is from the following article:

Outright Countries: Are defined as the number of countries who won a medal without a tie.

Total Countries: Are defined as the number of countries who won a gold medal regardless of ties.

The data includes only All-Around and Event Finals at the World Championships and Olympic where all five individual events were contested. This disqualifies the 1992, 1996, and 2002 World Championships.

Year	Outright Countries	Outright	Total	Total Countries
1950	Poland	1	3	Poland Austria Sweden
1952	Soviet Union Hungary	2	2	Soviet Union Hungary
1954	Soviet Union Hungary Japan	3	4	Soviet Union Hungary Japan Sweden
1956	Soviet Union Hungary	2	2	Soviet Union Hungary
1958	Soviet Union Czechoslovakia	2	2	Soviet Union Czechoslovakia
1960	Soviet Union Czechoslovakia	2	2	Soviet Union Czechoslovakia
1962	Soviet Union Czechoslovakia	2	2	Soviet Union Czechoslovakia
1964	Czechoslovakia Soviet Union	2	2	Czechoslovakia Soviet Union
1966	Soviet Union Czechoslovakia	2	2	Soviet Union Czechoslovakia
1968	Czechoslovakia Soviet Union	2	2	Czechoslovakia Soviet Union
1970	East Germany Soviet Union	2	2	East Germany Soviet Union
1972	Soviet Union East Germany	2	2	Soviet Union East Germany
1974	Soviet Union East Germany	2	2	Soviet Union East Germany
1976	Romania Soviet Union	2	2	Romania Soviet Union
1978	Soviet Union Romania United States	3	3	Soviet Union Romania United States
1979	Romania Soviet Union Czechoslovakia	3	5	Romania Soviet Union Czechoslovakia East Germany China
1980	Soviet Union Romania East Germany	3	3	Soviet Union Romania East Germany
1981	East Germany Soviet Union	2	2	East Germany Soviet Union
1983	Soviet Union Romania East Germany Bulgaria	4	4	Soviet Union Romania East Germany Bulgaria
1984	Romania United States	2	3	Romania United States China
1985	Soviet Union Romania East Germany	3	3	Soviet Union Romania East Germany
1987	Soviet Union Romania	2	3	Soviet Union Romania East Germany
1988	Soviet Union Romania	2	2	Soviet Union Romania
1989	Soviet Union Romania	2	3	Soviet Union Romania China
1991	Soviet Union Romania United States North Korea	4	4	Soviet Union Romania United States North Korea
1992	Soviet Union (CIS) Romania China	3	4	Soviet Union (CIS) Romania China Hungary
1993	United States Romania Belarus	3	3	United States Romania Belarus
1994	United States Romania Russia China	4	4	United States Romania Russia China
1995	Ukraine Romania Russia China	4	4	Ukraine Romania Russia China
1996	Ukraine Romania Russia United States	4	4	Ukraine Romania Russia United States
1997	Romania Russia	2	2	Romania Russia
1999	Romania Russia China	3	3	Romania Russia China
2000	Russia Romania China	3	3	Russia Romania China
2001	Russia Romania	2	2	Russia Romania
2003	Russia Uzbekistan United States China Brazil	5	5	Russia Uzbekistan United States China Brazil
2004	Romania United States France	3	3	Romania United States France
2005	United States China	2	2	United States China
2006	China Italy Great Britain Ukraine	4	4	China Italy Great Britain Ukraine
2007	United States China Russia	3	3	United States China Russia
2008	United States China Romania North Korea	4	4	United States China Romania North Korea
2009	United States China Great Britain	3	3	United States China Great Britain
2010	Russia United States Great Britain Romania Australia	5	5	Russia United States Great Britain Romania Australia
2011	United States Russia China	3	3	United States Russia China
2012	United States Russia Romania China	4	4	United States Russia Romania China
2013	United States Russia China	3	3	United States Russia China
2014	United States China North Korea	3	3	United States China North Korea
2015	United States Russia	2	3	United States Russia China
2016	United States Russia Netherlands	3	3	United States Russia Netherlands
2017	United States Russia China Germany Japana	5	5	United States Russia China Germany Japana
2018	United States China Belgium	3	3	United States China Belgium
2019	United States Belgium	2	2	United States Belgium
2021	United States China Brazil Belgium	4	4	United States China Brazil Belgium
2021	Japan Russia China Brazil	4	4	Japan Russia China Brazil
2022	Brazil United States China Japan Great Britain	5	5	Brazil United States China Japan Great Britain

Below are bar + line graphs of the data.