Rank	Countries/Territories	Count	Percent
1	United States	474	43.1%
2	China	248	22.5%
3	Germany	107	9.7%
4	France	32	2.9%
5	Norway	27	2.5%
6	Japan	23	2.1%
7	Canada	23	2.1%
8		22	2%
9	Singapore	15	1.4%
10	Netherlands	13	1.2%
11	India	13	1.2%
12	Korea, Republic of	11	1%
13	Switzerland	11	1%
14	Sweden	9	0.8%
15	Cyprus	9	0.8%
16	Australia	9	0.8%
17	Hong Kong	8	0.7%
18	Taiwan	6	0.5%
19	United Kingdom	5	0.5%
20	Latvia	5	0.5%
21	Italy	5	0.5%
22	Egypt	4	0.4%
23	Argentina	3	0.3%
24	Ireland	3	0.3%
25	Russia	3	0.3%
26	Viet Nam	2	0.2%
27	Ukraine	2	0.2%
28	Iran, Islamic Republic of	2	0.2%
29	Bangladesh	1	0.1%
30	Brazil	1	0.1%
31	Bulgaria	1	0.1%
32	Pakistan	1	0.1%
33	Lithuania	1	0.1%
34	Malaysia	1	0.1%
35	Mongolia	1	0.1%