Rank	Countries/Territories	Count	Percent
1	United States	327	35.4%
2	China	264	28.5%
3	Germany	117	12.6%
4	Singapore	24	2.6%
5	Canada	21	2.3%
6	Japan	20	2.2%
7	Netherlands	16	1.7%
8	United Kingdom	13	1.4%
9	Korea, Republic of	12	1.3%
10	Iran, Islamic Republic of	12	1.3%
11	France	11	1.2%
12	Poland	9	1%
13	Hong Kong	9	1%
14	Brazil	9	1%
15	Russia	7	0.8%
16	Cyprus	6	0.6%
17	India	5	0.5%
18	Spain	5	0.5%
19	Turkey	4	0.4%
20	Australia	4	0.4%
21	Taiwan	3	0.3%
22	Thailand	3	0.3%
23	Ukraine	2	0.2%
24	South Africa	2	0.2%
25	Portugal	2	0.2%
26	Norway	2	0.2%
27	Ireland	2	0.2%
28	Italy	2	0.2%
29	Malaysia	2	0.2%
30	Mexico	2	0.2%
31	Mongolia	2	0.2%
32	Bosnia and Herzegovina	1	0.1%
33	Argentina	1	0.1%
34	Ethiopia	1	0.1%
35	Chile	1	0.1%
36	Viet Nam	1	0.1%
37	Switzerland	1	0.1%