Rank	Countries/Territories	Count	Percent
1	United States	338	35.5%
2	China	237	24.9%
3	Germany	132	13.9%
4	Japan	19	2%
5	Brazil	18	1.9%
6	Netherlands	15	1.6%
7	Norway	15	1.6%
8	Korea, Republic of	14	1.5%
9	Romania	13	1.4%
10	Canada	13	1.4%
11	Australia	12	1.3%
12	India	11	1.2%
13	United Kingdom	11	1.2%
14	France	11	1.2%
15	Belgium	9	0.9%
16	Singapore	8	0.8%
17	Switzerland	8	0.8%
18	Turkey	8	0.8%
19	Poland	7	0.7%
20	Cyprus	5	0.5%
21	Spain	4	0.4%
22	Russia	4	0.4%
23	Ireland	3	0.3%
24	Mexico	3	0.3%
25	Denmark	3	0.3%
26	Bulgaria	3	0.3%
27	Taiwan	3	0.3%
28	Thailand	2	0.2%
29	United Arab Emirates	2	0.2%
30	Iran, Islamic Republic of	2	0.2%
31	Ghana	2	0.2%
32	Hong Kong	2	0.2%
33	Mongolia	2	0.2%
34	Israel	2	0.2%
35	Italy	1	0.1%
36	Sri Lanka	1	0.1%
37	Sweden	1	0.1%
38	Slovakia	1	0.1%
39	Portugal	1	0.1%
40	Czech Republic	1	0.1%
41	Colombia	1	0.1%
42	Argentina	1	0.1%
43	Bangladesh	1	0.1%
44	Ukraine	1	0.1%