Rank	Countries/Territories	Count	Percent
1	United States	379	43.4%
2	China	209	23.9%
3	Germany	48	5.5%
4	Russia	42	4.8%
5	Japan	32	3.7%
6	Korea, Republic of	24	2.7%
7	Brazil	23	2.6%
8	India	17	1.9%
9	Hong Kong	12	1.4%
10	Malaysia	9	1%
11	Greece	8	0.9%
12	Netherlands	7	0.8%
13	Taiwan	7	0.8%
14	Singapore	5	0.6%
15	Canada	5	0.6%
16	Latvia	5	0.6%
17	Australia	4	0.5%
18	France	3	0.3%
19	Iran, Islamic Republic of	3	0.3%
20	Ireland	3	0.3%
21	New Zealand	3	0.3%
22	Philippines	3	0.3%
23	Saudi Arabia	3	0.3%
24	Romania	3	0.3%
25	United Kingdom	3	0.3%
26	Ukraine	2	0.2%
27	South Africa	2	0.2%
28	Spain	2	0.2%
29	Argentina	2	0.2%
30	Austria	2	0.2%
31	Bangladesh	1	0.1%
32	Italy	1	0.1%
33	Sweden	1	0.1%
34	Poland	1	0.1%