Rank	Countries/Territories	Count	Percent
1	United States	396	36.8%
2	China	287	26.7%
3	Germany	141	13.1%
4	Japan	29	2.7%
5	Singapore	24	2.2%
6	Canada	23	2.1%
7	Netherlands	16	1.5%
8	Iran, Islamic Republic of	15	1.4%
9	Russia	15	1.4%
10	France	14	1.3%
11	United Kingdom	13	1.2%
12	Korea, Republic of	12	1.1%
13	Poland	10	0.9%
14	Hong Kong	9	0.8%
15	Brazil	9	0.8%
16	Australia	7	0.7%
17	Cyprus	7	0.7%
18	India	5	0.5%
19	Spain	5	0.5%
20	Turkey	4	0.4%
21	Taiwan	3	0.3%
22	Thailand	3	0.3%
23	Norway	3	0.3%
24	Ireland	2	0.2%
25	Italy	2	0.2%
26	Portugal	2	0.2%
27	Ukraine	2	0.2%
28	United Arab Emirates	2	0.2%
29	South Africa	2	0.2%
30	Malaysia	2	0.2%
31	Mexico	2	0.2%
32	Mongolia	2	0.2%
33	Chile	1	0.1%
34	Egypt	1	0.1%
35	Ethiopia	1	0.1%
36	Bosnia and Herzegovina	1	0.1%
37	Argentina	1	0.1%
38	Switzerland	1	0.1%
39	Viet Nam	1	0.1%