Rank	Countries/Territories	Count	Percent
1	United States	502	36.4%
2	China	427	31%
3	Germany	156	11.3%
4	Japan	32	2.3%
5	Canada	26	1.9%
6	Singapore	24	1.7%
7	Netherlands	21	1.5%
8	France	21	1.5%
9	Poland	17	1.2%
10	Russia	16	1.2%
11	Iran, Islamic Republic of	16	1.2%
12	Brazil	14	1%
13	Korea, Republic of	13	0.9%
14	United Kingdom	13	0.9%
15	Hong Kong	9	0.7%
16	Cyprus	8	0.6%
17	Australia	7	0.5%
18	India	5	0.4%
19	Spain	5	0.4%
20	Thailand	5	0.4%
21	Turkey	4	0.3%
22	Mexico	4	0.3%
23	Mongolia	4	0.3%
24	Norway	3	0.2%
25	Ireland	3	0.2%
26	Taiwan	3	0.2%
27	Italy	2	0.1%
28	Malaysia	2	0.1%
29	Argentina	2	0.1%
30	Portugal	2	0.1%
31	Ukraine	2	0.1%
32	United Arab Emirates	2	0.1%
33	South Africa	2	0.1%
34	Switzerland	1	0.1%
35	Bosnia and Herzegovina	1	0.1%
36	Chile	1	0.1%
37	Cote D'ivoire	1	0.1%
38	Egypt	1	0.1%
39	Ethiopia	1	0.1%
40	Viet Nam	1	0.1%