Rank	Countries/Territories	Count	Percent
1	United States	211	37.3%
2	China	184	32.5%
3	Germany	41	7.2%
4	Canada	32	5.7%
5	France	20	3.5%
6	Netherlands	13	2.3%
7	Japan	10	1.8%
8	Romania	8	1.4%
9	India	6	1.1%
10	Switzerland	5	0.9%
11	Ukraine	5	0.9%
12	United Kingdom	5	0.9%
13	Cyprus	3	0.5%
14	Singapore	3	0.5%
15	Greece	3	0.5%
16	Hong Kong	3	0.5%
17	Norway	2	0.4%
18	Pakistan	2	0.4%
19	Denmark	2	0.4%
20	Australia	2	0.4%
21	Iran, Islamic Republic of	2	0.4%
22	Ireland	2	0.4%
23	Italy	1	0.2%
24	Malaysia	1	0.2%