Rank	Countries/Territories	Count	Percent
1	United States	320	35.4%
2	China	292	32.3%
3	Germany	76	8.4%
4	Ireland	32	3.5%
5	Japan	30	3.3%
6	Russia	18	2%
7	United Kingdom	16	1.8%
8	India	16	1.8%
9	France	15	1.7%
10		14	1.6%
11	Korea, Republic of	9	1%
12	Singapore	9	1%
13	Netherlands	8	0.9%
14	Turkey	8	0.9%
15	Italy	5	0.6%
16	Hong Kong	4	0.4%
17	Australia	4	0.4%
18	Canada	4	0.4%
19	Cyprus	3	0.3%
20	Iran, Islamic Republic of	2	0.2%
21	Malaysia	2	0.2%
22	Mongolia	2	0.2%
23	Taiwan	2	0.2%
24	Viet Nam	2	0.2%
25	Slovakia	2	0.2%
26	Switzerland	1	0.1%
27	Norway	1	0.1%
28	Paraguay	1	0.1%
29	Poland	1	0.1%
30	Ukraine	1	0.1%
31	Kenya	1	0.1%
32	Bahrain	1	0.1%
33	Argentina	1	0.1%