Rank	Countries/Territories	Count	Percent
1	United States	304	36.2%
2	China	203	24.2%
3	Germany	77	9.2%
4	Norway	23	2.7%
5	Iran, Islamic Republic of	21	2.5%
6	Japan	18	2.1%
7	Netherlands	15	1.8%
8	India	13	1.5%
9	France	12	1.4%
10	Korea, Republic of	11	1.3%
11	Australia	10	1.2%
12	Brazil	10	1.2%
13	Ireland	9	1.1%
14	Romania	9	1.1%
15	Singapore	9	1.1%
16	Thailand	9	1.1%
17	Turkey	7	0.8%
18	United Kingdom	7	0.8%
19	Italy	7	0.8%
20	Hungary	7	0.8%
21	Hong Kong	6	0.7%
22	Uganda	6	0.7%
23	Russia	5	0.6%
24	Malaysia	5	0.6%
25	Mexico	5	0.6%
26	Canada	5	0.6%
27	Egypt	4	0.5%
28	Switzerland	4	0.5%
29	Taiwan	4	0.5%
30	Cyprus	3	0.4%
31	Belgium	2	0.2%
32	Saudi Arabia	2	0.2%
33	Poland	2	0.2%
34	Mauritius	2	0.2%
35	Pakistan	1	0.1%
36	Czech Republic	1	0.1%
37	Finland	1	0.1%
38	Indonesia	1	0.1%