Rank	Countries/Territories	Count	Percent
1	United States	322	38.2%
2	China	234	27.8%
3	Germany	68	8.1%
4	United Kingdom	59	7%
5	India	37	4.4%
6	France	20	2.4%
7	Korea, Republic of	20	2.4%
8	Japan	16	1.9%
9	Netherlands	14	1.7%
10	Canada	10	1.2%
11	Chile	4	0.5%
12	Cyprus	4	0.5%
13	Singapore	4	0.5%
14	Thailand	3	0.4%
15	Turkey	3	0.4%
16	Belgium	3	0.4%
17	Italy	3	0.4%
18	Iran, Islamic Republic of	2	0.2%
19	Ireland	2	0.2%
20	Luxembourg	2	0.2%
21	Greece	2	0.2%
22	Saudi Arabia	2	0.2%
23	Portugal	2	0.2%
24	Russia	1	0.1%
25	Switzerland	1	0.1%
26	Hong Kong	1	0.1%
27	Brazil	1	0.1%
28	Malaysia	1	0.1%
29	Norway	1	0.1%
30	Philippines	1	0.1%