Rank	Countries/Territories	Count	Percent
1	United States	427	42.7%
2	China	314	31.4%
3	Germany	123	12.3%
4	France	18	1.8%
5	Switzerland	12	1.2%
6	Netherlands	11	1.1%
7	Japan	11	1.1%
8	Canada	8	0.8%
9	Cyprus	7	0.7%
10	Russia	7	0.7%
11	Thailand	7	0.7%
12	Turkey	7	0.7%
13		5	0.5%
14	India	5	0.5%
15	Mexico	4	0.4%
16	Singapore	3	0.3%
17	United Kingdom	3	0.3%
18	Hong Kong	3	0.3%
19	Egypt	3	0.3%
20	Australia	2	0.2%
21	Indonesia	2	0.2%
22	Iran, Islamic Republic of	2	0.2%
23	Viet Nam	2	0.2%
24	Taiwan	2	0.2%
25	Poland	2	0.2%
26	Norway	1	0.1%
27	Sweden	1	0.1%
28	Ukraine	1	0.1%
29	Ireland	1	0.1%
30	Italy	1	0.1%
31	Lithuania	1	0.1%
32	Malaysia	1	0.1%
33	Bangladesh	1	0.1%
34	Argentina	1	0.1%