Rank	Countries/Territories	Count	Percent
1	United States	165	28.2%
2	China	154	26.3%
3	Germany	93	15.9%
4	Brazil	17	2.9%
5	Norway	15	2.6%
6	Japan	14	2.4%
7	Canada	13	2.2%
8	Korea, Republic of	12	2%
9	Romania	12	2%
10	Netherlands	9	1.5%
11	Australia	9	1.5%
12	India	7	1.2%
13	United Kingdom	7	1.2%
14	Switzerland	5	0.9%
15	Turkey	5	0.9%
16	Singapore	5	0.9%
17	Spain	4	0.7%
18	Russia	4	0.7%
19	Belgium	4	0.7%
20	Cyprus	3	0.5%
21	Mexico	3	0.5%
22	Ireland	3	0.5%
23	Poland	3	0.5%
24	Taiwan	3	0.5%
25	Thailand	2	0.3%
26	United Arab Emirates	2	0.3%
27	Israel	2	0.3%
28	Iran, Islamic Republic of	2	0.3%
29	Denmark	2	0.3%
30	France	2	0.3%
31	Hong Kong	1	0.2%
32	Italy	1	0.2%
33	Portugal	1	0.2%
34	Sweden	1	0.2%
35	Slovakia	1	0.2%