Rank	Countries/Territories	Count	Percent
1	United States	373	34.5%
2	China	260	24.1%
3	Russia	72	6.7%
4	Germany	62	5.7%
5	Netherlands	46	4.3%
6	Japan	33	3.1%
7	Australia	28	2.6%
8	Canada	21	1.9%
9	Portugal	19	1.8%
10	United Kingdom	19	1.8%
11	Poland	18	1.7%
12	Korea, Republic of	16	1.5%
13	France	13	1.2%
14	India	9	0.8%
15	Taiwan	9	0.8%
16	Switzerland	8	0.7%
17	Norway	8	0.7%
18	Ireland	8	0.7%
19	Kazakhstan	7	0.6%
20	Turkey	5	0.5%
21	Hong Kong	5	0.5%
22	Brazil	5	0.5%
23	Belgium	4	0.4%
24	Mexico	4	0.4%
25	Singapore	3	0.3%
26	Israel	3	0.3%
27	Cyprus	3	0.3%
28	Denmark	3	0.3%
29	Bangladesh	2	0.2%
30	Belarus	2	0.2%
31	Iran, Islamic Republic of	2	0.2%
32	Pakistan	2	0.2%
33	Ukraine	2	0.2%
34	Malaysia	1	0.1%
35	Italy	1	0.1%
36	Cambodia	1	0.1%
37	Armenia	1	0.1%
38	Egypt	1	0.1%
39	Zambia	1	0.1%