排名	国家/地区	数量	占比
1	United States	579	39.1%
2	China	385	26%
3	Russia	109	7.4%
4	Germany	62	4.2%
5	India	56	3.8%
6	Ireland	35	2.4%
7	France	24	1.6%
8	Brazil	21	1.4%
9	Italy	20	1.4%
10	Japan	20	1.4%
11	United Kingdom	18	1.2%
12	Korea, Republic of	13	0.9%
13	Latvia	13	0.9%
14	Australia	13	0.9%
15	Portugal	12	0.8%
16	Greece	11	0.7%
17	Canada	10	0.7%
18	Mexico	8	0.5%
19	Netherlands	7	0.5%
20	Hong Kong	7	0.5%
21	Spain	6	0.4%
22	Argentina	5	0.3%
23	Viet Nam	4	0.3%
24	Turkey	3	0.2%
25	Finland	3	0.2%
26	Singapore	3	0.2%
27	South Africa	2	0.1%
28	Qatar	2	0.1%
29	Romania	2	0.1%
30	Sweden	2	0.1%
31	Switzerland	2	0.1%
32	Taiwan	2	0.1%
33	Tunisia	2	0.1%
34	Mongolia	2	0.1%
35	Iceland	2	0.1%
36	Egypt	2	0.1%
37	Bangladesh	2	0.1%
38	Ukraine	2	0.1%
39	Malta	2	0.1%
40	Czech Republic	1	0.1%
41	Iran, Islamic Republic of	1	0.1%
42	Holy See	1	0.1%
43	Nepal	1	0.1%
44	New Zealand	1	0.1%
45	Lithuania	1	0.1%
46	Malaysia	1	0.1%