Rank	Countries/Territories	Count	Percent
1	United States	239	38.7%
2	China	140	22.7%
3	Germany	82	13.3%
4	India	28	4.5%
5	Korea, Republic of	21	3.4%
6	Ireland	17	2.8%
7	Taiwan	14	2.3%
8	United Kingdom	10	1.6%
9	Singapore	9	1.5%
10	Netherlands	6	1%
11	Turkey	6	1%
12	Spain	5	0.8%
13	Japan	5	0.8%
14	Canada	4	0.6%
15	Iran, Islamic Republic of	3	0.5%
16	Romania	3	0.5%
17	Russia	3	0.5%
18	Viet Nam	3	0.5%
19	Syrian Arab Republic	2	0.3%
20	Hong Kong	2	0.3%
21	Italy	2	0.3%
22	Mexico	2	0.3%
23	Cyprus	2	0.3%
24	Egypt	2	0.3%
25	France	2	0.3%
26	Greece	1	0.2%
27	Australia	1	0.2%
28	Colombia	1	0.2%
29	Indonesia	1	0.2%
30	Thailand	1	0.2%
31	Switzerland	1	0.2%