Trade partner concentration by country

Mexico is the most concentrated economy tracked here — 63% of its two-way trade runs through United States alone. The index below sums the squared shares of each country's top 5 disclosed trading partners (0-10,000 scale, higher = more concentrated); it is a lower-bound proxy, not an official HHI computed over every partner.

#	Country	Concentration index	Largest partner	Partner share
1	Mexico	4,113	United States	63%
2	Canada	3,527	United States	58%
3	Hong Kong	2,803	China	52%
4	Ireland	1,299	United States	32%
5	Austria	1,176	Germany	33%
6	Slovenia	1,043	Switzerland	29%
7	Luxembourg	1,039	Germany	22%
8	Portugal	1,016	Spain	27%
9	Czechia	911	Germany	27%
10	Brazil	843	China	25%
11	New Zealand	798	China	22%
12	Poland	777	Germany	26%
13	Slovakia	724	Germany	18%
14	Thailand	720	China	20%
15	South Korea	687	China	20%
16	Belgium	679	Netherlands	16%
17	Japan	670	China	19%
18	Switzerland	623	United States	18%
19	Hungary	601	Germany	22%
20	Netherlands	571	Germany	18%
21	Norway	570	Germany	14%
22	Latvia	566	Lithuania	18%
23	Croatia	510	Germany	12%
24	Finland	499	Sweden	14%
25	Malta	485	Italy	13%
26	Denmark	479	Germany	16%
27	Romania	476	Germany	18%
28	United States	472	Mexico	15%
29	France	462	Germany	14%
30	Estonia	459	Finland	12%
31	Singapore	430	China	12%
32	Spain	409	Germany	12%
33	Lithuania	403	Poland	12%
34	India	397	United States	13%
35	Cyprus	394	Greece	16%
36	Sweden	391	Germany	13%
37	Italy	383	Germany	12%
38	United Kingdom	373	United States	13%
39	Bulgaria	372	Germany	13%
40	Germany	294	Netherlands	10%
41	Greece	245	Germany	9.7%