Rank	Countries/Territories	Count	Percent
1	United States	307	35.9%
2	China	224	26.2%
3	Germany	69	8.1%
4	Japan	41	4.8%
5	India	35	4.1%
6	Korea, Republic of	21	2.5%
7	France	15	1.8%
8	Latvia	13	1.5%
9	Turkey	13	1.5%
10	United Kingdom	12	1.4%
11	Ireland	11	1.3%
12	Canada	11	1.3%
13	Egypt	9	1.1%
14	Russia	8	0.9%
15	Hong Kong	7	0.8%
16	Singapore	6	0.7%
17	Taiwan	5	0.6%
18	Morocco	5	0.6%
19	Cyprus	5	0.6%
20	Australia	4	0.5%
21	Netherlands	4	0.5%
22	Spain	4	0.5%
23	Israel	3	0.4%
24	Belgium	3	0.4%
25	Iran, Islamic Republic of	3	0.4%
26	Italy	2	0.2%
27	Mexico	2	0.2%
28	Thailand	2	0.2%
29	Ukraine	1	0.1%
30	Sweden	1	0.1%
31	Senegal	1	0.1%
32	Mongolia	1	0.1%
33	Philippines	1	0.1%
34	Romania	1	0.1%
35	Hungary	1	0.1%
36	Malaysia	1	0.1%
37	Argentina	1	0.1%
38	Viet Nam	1	0.1%