Rank	Countries/Territories	Count	Percent
1	United States	266	33.5%
2	China	262	33%
3	Germany	90	11.3%
4	Japan	24	3%
5	Canada	17	2.1%
6	Iran, Islamic Republic of	14	1.8%
7	Netherlands	12	1.5%
8	Singapore	11	1.4%
9	India	11	1.4%
10	Korea, Republic of	9	1.1%
11	Ireland	9	1.1%
12	Russia	7	0.9%
13	Belgium	7	0.9%
14	Australia	6	0.8%
15	Spain	6	0.8%
16	Portugal	6	0.8%
17	Ukraine	5	0.6%
18	Bangladesh	5	0.6%
19	United Kingdom	4	0.5%
20	Taiwan	4	0.5%
21	Egypt	3	0.4%
22	France	2	0.3%
23	Cyprus	2	0.3%
24	Brazil	2	0.3%
25	Indonesia	2	0.3%
26	Hong Kong	2	0.3%
27	Viet Nam	2	0.3%
28	Sweden	1	0.1%
29	Oman	1	0.1%
30	Malaysia	1	0.1%
31	Mauritius	1	0.1%