Rank	Countries/Territories	Count	Percent
1	United States	454	38.3%
2	China	325	27.4%
3	Germany	240	20.2%
4	France	32	2.7%
5	Greece	13	1.1%
6	Netherlands	13	1.1%
7	Singapore	12	1%
8	Norway	9	0.8%
9	Ukraine	9	0.8%
10	Egypt	8	0.7%
11	Canada	7	0.6%
12	Japan	7	0.6%
13	Iran, Islamic Republic of	6	0.5%
14	Ireland	6	0.5%
15	Australia	5	0.4%
16	Switzerland	5	0.4%
17	Italy	4	0.3%
18	Korea, Republic of	4	0.3%
19	Hungary	3	0.3%
20	Belgium	3	0.3%
21	Brazil	3	0.3%
22	Viet Nam	3	0.3%
23	Thailand	2	0.2%
24	Malaysia	2	0.2%
25	Russia	2	0.2%
26	Cyprus	2	0.2%
27	Argentina	1	0.1%
28	India	1	0.1%
29	Hong Kong	1	0.1%
30	Luxembourg	1	0.1%
31	Pakistan	1	0.1%
32	Romania	1	0.1%
33	United Kingdom	1	0.1%