Rank	Countries/Territories	Count	Percent
1	United States	528	42.5%
2	China	409	32.9%
3	Germany	107	8.6%
4	France	54	4.3%
5	Japan	38	3.1%
6	Netherlands	18	1.4%
7	Canada	8	0.6%
8	Taiwan	8	0.6%
9	Singapore	8	0.6%
10	South Africa	6	0.5%
11	Cyprus	6	0.5%
12	Argentina	6	0.5%
13	Latvia	6	0.5%
14	India	6	0.5%
15	Qatar	5	0.4%
16	United Kingdom	5	0.4%
17	Iran, Islamic Republic of	4	0.3%
18	Korea, Republic of	4	0.3%
19	Australia	3	0.2%
20	Denmark	3	0.2%
21	Hong Kong	2	0.2%
22	Malaysia	2	0.2%
23	Switzerland	2	0.2%
24	Romania	1	0.1%
25	Ukraine	1	0.1%
26	Mongolia	1	0.1%
27	Poland	1	0.1%