Rank	Countries/Territories	Count	Percent
1	United States	523	43.8%
2	China	363	30.4%
3	Germany	132	11.1%
4	France	34	2.8%
5	Japan	29	2.4%
6	Norway	13	1.1%
7	Singapore	12	1%
8	Ireland	9	0.8%
9	Australia	7	0.6%
10	Netherlands	7	0.6%
11	Taiwan	6	0.5%
12	Romania	6	0.5%
13	Argentina	6	0.5%
14	Korea, Republic of	5	0.4%
15	Latvia	5	0.4%
16	Canada	5	0.4%
17	Cyprus	5	0.4%
18	Russia	4	0.3%
19	Sweden	4	0.3%
20	Hong Kong	3	0.3%
21	India	3	0.3%
22	Iraq	3	0.3%
23	Iran, Islamic Republic of	2	0.2%
24	Chile	2	0.2%
25	Poland	2	0.2%
26	Ukraine	1	0.1%
27	United Kingdom	1	0.1%
28	Malaysia	1	0.1%