Rank	Countries/Territories	Count	Percent
1	United States	280	33.1%
2	China	272	32.2%
3	Germany	101	11.9%
4	Japan	43	5.1%
5	Russia	27	3.2%
6	Netherlands	24	2.8%
7	Hong Kong	17	2%
8	Canada	13	1.5%
9	Australia	11	1.3%
10	Cyprus	9	1.1%
11	France	9	1.1%
12	Korea, Republic of	9	1.1%
13	Belgium	4	0.5%
14	Saudi Arabia	3	0.4%
15	Singapore	3	0.4%
16	Taiwan	3	0.4%
17	Italy	3	0.4%
18	United Kingdom	2	0.2%
19	Slovakia	2	0.2%
20	Switzerland	2	0.2%
21	Mauritius	2	0.2%
22	Mongolia	1	0.1%
23	Malaysia	1	0.1%
24	Argentina	1	0.1%
25	Iran, Islamic Republic of	1	0.1%
26	Viet Nam	1	0.1%
27	Ukraine	1	0.1%
28	Poland	1	0.1%