Which country has topped the swimming medals list in the summer olympics?

Context: Summary
Games	Year	Events	Best Nation
1	1896	4	 Hungary
2	1900	7	 Great Britain
3	1904	9	 Germany
4	1908	6	 Great Britain
5	1912	9	 Germany
6	
7	1920	10	 United States
8	1924	11	 United States
9	1928	11	 United States
10	1932	11	 Japan
11	1936	11	 Japan
12	
13	
14	1948	11	 United States
15	1952	11	 United States
16	1956	13	 Australia
Games	Year	Events	Best Nation
17	1960	15	 United States
18	1964	18	 United States
19	1968	29	 United States
20	1972	29	 United States
21	1976	26	 United States
22	1980	26	 East Germany
23	1984	29	 United States
24	1988	31	 East Germany
25	1992	31	 United States
26	1996	32	 United States
27	2000	32	 United States
28	2004	32	 United States
29	2008	34	 United States
30	2012	34	 United States
31	2016	34	 United States
32	2020	37	 United States

Answer: United States