Rank	Countries/Territories	Count	Percent
1	United States	305	41.2%
2	China	191	25.8%
3	Germany	63	8.5%
4	Canada	26	3.5%
5	Japan	26	3.5%
6	Taiwan	19	2.6%
7	Netherlands	19	2.6%
8	United Kingdom	12	1.6%
9	Norway	11	1.5%
10	India	10	1.3%
11	Spain	8	1.1%
12	Ireland	6	0.8%
13	Italy	4	0.5%
14	Australia	4	0.5%
15	France	4	0.5%
16	Switzerland	3	0.4%
17	Korea, Republic of	3	0.4%
18	Cyprus	3	0.4%
19	Pakistan	3	0.4%
20	Portugal	2	0.3%
21	Saudi Arabia	2	0.3%
22	Singapore	2	0.3%
23	South Africa	2	0.3%
24	Indonesia	2	0.3%
25	Iran, Islamic Republic of	2	0.3%
26	Hong Kong	2	0.3%
27	Brazil	2	0.3%
28	Belgium	1	0.1%
29	Czech Republic	1	0.1%
30	Malaysia	1	0.1%
31	Sri Lanka	1	0.1%
32	Thailand	1	0.1%