Rank	Countries/Territories	Count	Percent
1	United States	301	38.1%
2	China	265	33.6%
3	Germany	50	6.3%
4	Canada	36	4.6%
5	France	32	4.1%
6	Netherlands	15	1.9%
7	United Kingdom	11	1.4%
8	Japan	11	1.4%
9	Romania	8	1%
10	Ukraine	6	0.8%
11	India	6	0.8%
12	Cyprus	6	0.8%
13	Hong Kong	5	0.6%
14	Switzerland	5	0.6%
15	Norway	4	0.5%
16	Ireland	4	0.5%
17	Italy	3	0.4%
18	Greece	3	0.4%
19	Singapore	3	0.4%
20	Sweden	2	0.3%
21	Pakistan	2	0.3%
22	Denmark	2	0.3%
23	Brazil	2	0.3%
24	Australia	2	0.3%
25	Iran, Islamic Republic of	2	0.3%
26	Malaysia	1	0.1%
27	Belgium	1	0.1%
28	Thailand	1	0.1%