Rank	Countries/Territories	Count	Percent
1	United States	452	36.7%
2	China	420	34.1%
3	Germany	123	10%
4	Japan	56	4.5%
5	Korea, Republic of	24	1.9%
6	India	20	1.6%
7	Canada	19	1.5%
8	France	15	1.2%
9	Singapore	14	1.1%
10	Ireland	12	1%
11	Netherlands	12	1%
12	United Kingdom	10	0.8%
13	Hong Kong	7	0.6%
14	Cyprus	7	0.6%
15	Latvia	5	0.4%
16	Spain	5	0.4%
17	Greece	4	0.3%
18	Argentina	4	0.3%
19	Iran, Islamic Republic of	3	0.2%
20	Lithuania	2	0.2%
21	Australia	2	0.2%
22	Switzerland	2	0.2%
23	Taiwan	2	0.2%
24	Norway	2	0.2%
25	Russia	2	0.2%
26	Turkey	2	0.2%
27	Ukraine	2	0.2%
28	Thailand	1	0.1%
29	Sweden	1	0.1%
30	Belgium	1	0.1%
31	Brazil	1	0.1%