Rank	Countries/Territories	Count	Percent
1	United States	338	37.3%
2	China	304	33.6%
3	Germany	85	9.4%
4	France	17	1.9%
5	Iran, Islamic Republic of	16	1.8%
6		14	1.5%
7	Japan	13	1.4%
8	India	11	1.2%
9	United Kingdom	10	1.1%
10	Singapore	9	1%
11	Netherlands	7	0.8%
12	Korea, Republic of	7	0.8%
13	Italy	6	0.7%
14	Australia	6	0.7%
15	Cyprus	6	0.7%
16	Russia	5	0.6%
17	Taiwan	5	0.6%
18	Romania	4	0.4%
19	Hong Kong	4	0.4%
20	Ireland	3	0.3%
21	Brazil	3	0.3%
22	Canada	3	0.3%
23	New Zealand	3	0.3%
24	Peru	3	0.3%
25	Kuwait	2	0.2%
26	Lithuania	2	0.2%
27	Malaysia	2	0.2%
28	Mexico	2	0.2%
29	Uganda	2	0.2%
30	Viet Nam	2	0.2%
31	Czech Republic	2	0.2%
32	Finland	2	0.2%
33	Bangladesh	2	0.2%
34	Argentina	1	0.1%
35	Chile	1	0.1%
36	Greece	1	0.1%
37	Ukraine	1	0.1%
38	Switzerland	1	0.1%