Rank	Countries/Territories	Count	Percent
1	United States	370	29.2%
2	China	337	26.6%
3	Germany	135	10.7%
4	Canada	58	4.6%
5	India	56	4.4%
6	Brazil	43	3.4%
7	Russia	31	2.5%
8	Korea, Republic of	23	1.8%
9	France	18	1.4%
10	Pakistan	16	1.3%
11	Italy	15	1.2%
12	Japan	15	1.2%
13	Ireland	14	1.1%
14	Romania	13	1%
15	Netherlands	12	0.9%
16	Czech Republic	11	0.9%
17	Spain	10	0.8%
18	United Kingdom	10	0.8%
19	Iran, Islamic Republic of	9	0.7%
20	Taiwan	8	0.6%
21	Poland	6	0.5%
22	Hong Kong	5	0.4%
23	Australia	5	0.4%
24	Thailand	4	0.3%
25	Switzerland	4	0.3%
26	Viet Nam	4	0.3%
27	Ukraine	3	0.2%
28	Sweden	3	0.2%
29	Cyprus	3	0.2%
30	Lithuania	3	0.2%
31	Mexico	3	0.2%
32	Ghana	2	0.2%
33	Greece	2	0.2%
34	Israel	1	0.1%
35	Bangladesh	1	0.1%
36	Belgium	1	0.1%
37	Argentina	1	0.1%
38	Mongolia	1	0.1%
39	Malaysia	1	0.1%
40	Mauritius	1	0.1%
41	Kuwait	1	0.1%
42	Norway	1	0.1%
43	Singapore	1	0.1%
44	Slovakia	1	0.1%
45	South Africa	1	0.1%
46	Togo	1	0.1%
47	Turkey	1	0.1%