Rank	Countries/Territories	Count	Percent
1	United States	263	36.6%
2	China	234	32.5%
3	Germany	47	6.5%
4	Netherlands	20	2.8%
5	India	16	2.2%
6	Egypt	14	1.9%
7	Canada	13	1.8%
8	Japan	12	1.7%
9	Russia	12	1.7%
10	United Kingdom	9	1.3%
11	Ireland	9	1.3%
12	Ghana	8	1.1%
13	Viet Nam	8	1.1%
14	Singapore	8	1.1%
15	Switzerland	6	0.8%
16	Ukraine	4	0.6%
17	Iran, Islamic Republic of	4	0.6%
18	France	4	0.6%
19	Indonesia	3	0.4%
20	Greece	3	0.4%
21	Hong Kong	3	0.4%
22	Argentina	2	0.3%
23	Czech Republic	2	0.3%
24	Israel	2	0.3%
25	Taiwan	2	0.3%
26	Thailand	2	0.3%
27	Sweden	2	0.3%
28	Saudi Arabia	2	0.3%
29	Korea, Republic of	2	0.3%
30	Malaysia	1	0.1%
31	Romania	1	0.1%
32	Cyprus	1	0.1%