Rank	Countries/Territories	Count	Percent
1	United States	481	45.2%
2	China	271	25.5%
3	Germany	88	8.3%
4	France	26	2.4%
5	Japan	23	2.2%
6	Korea, Republic of	23	2.2%
7	Netherlands	22	2.1%
8	India	19	1.8%
9	Canada	18	1.7%
10	Iran, Islamic Republic of	15	1.4%
11	United Kingdom	13	1.2%
12	Russia	8	0.8%
13	Singapore	8	0.8%
14	Spain	6	0.6%
15	Pakistan	5	0.5%
16	Switzerland	4	0.4%
17	Taiwan	4	0.4%
18	Serbia	4	0.4%
19	Mexico	3	0.3%
20	Hong Kong	3	0.3%
21	Cyprus	3	0.3%
22	Australia	2	0.2%
23	Ireland	2	0.2%
24	Italy	2	0.2%
25	Viet Nam	2	0.2%
26	Turkey	2	0.2%
27	Portugal	1	0.1%
28	New Zealand	1	0.1%
29	Malaysia	1	0.1%
30	Austria	1	0.1%
31	Belgium	1	0.1%
32	Bulgaria	1	0.1%
33	Denmark	1	0.1%