Rank	Countries/Territories	Count	Percent
1	United States	433	37.3%
2	China	384	33.1%
3	Germany	139	12%
4	Japan	40	3.4%
5	India	22	1.9%
6	Netherlands	19	1.6%
7	Singapore	17	1.5%
8	Canada	13	1.1%
9	Korea, Republic of	12	1%
10	Russia	11	0.9%
11	United Kingdom	9	0.8%
12	France	8	0.7%
13	Czech Republic	7	0.6%
14	Australia	5	0.4%
15	Iran, Islamic Republic of	4	0.3%
16	Ireland	4	0.3%
17	Hong Kong	4	0.3%
18	Hungary	4	0.3%
19	Indonesia	3	0.3%
20	Cyprus	3	0.3%
21	Viet Nam	3	0.3%
22	Thailand	3	0.3%
23	Sudan	2	0.2%
24	Brazil	2	0.2%
25	Costa Rica	1	0.1%
26	Malaysia	1	0.1%
27	Sweden	1	0.1%
28	Switzerland	1	0.1%
29	Taiwan	1	0.1%
30	Saudi Arabia	1	0.1%
31	Norway	1	0.1%
32	Uganda	1	0.1%
33	Slovakia	1	0.1%