Rank	Countries/Territories	Count	Percent
1	United States	308	45%
2	China	138	20.1%
3	Germany	85	12.4%
4	Korea, Republic of	19	2.8%
5	India	13	1.9%
6	Ireland	11	1.6%
7	Singapore	11	1.6%
8	Taiwan	10	1.5%
9	Malaysia	8	1.2%
10	Sweden	7	1%
11	Japan	6	0.9%
12	Netherlands	6	0.9%
13	United Kingdom	6	0.9%
14	Poland	5	0.7%
15	Australia	5	0.7%
16	Colombia	4	0.6%
17	Israel	4	0.6%
18	Italy	4	0.6%
19	Iran, Islamic Republic of	4	0.6%
20	Canada	4	0.6%
21	France	3	0.4%
22	Argentina	3	0.4%
23	Armenia	3	0.4%
24	Thailand	3	0.4%
25	Viet Nam	3	0.4%
26	Serbia	2	0.3%
27	Brazil	2	0.3%
28	Georgia	2	0.3%
29	Hong Kong	2	0.3%
30	Greece	1	0.1%
31	Cyprus	1	0.1%
32	Portugal	1	0.1%
33	Mongolia	1	0.1%