Rank	Countries/Territories	Count	Percent
1	United States	420	39.1%
2	China	340	31.6%
3	Germany	163	15.2%
4	Iran, Islamic Republic of	20	1.9%
5	Netherlands	15	1.4%
6	Japan	10	0.9%
7	India	9	0.8%
8	Russia	9	0.8%
9	Singapore	9	0.8%
10	Ireland	7	0.7%
11	Canada	6	0.6%
12	France	5	0.5%
13	Australia	5	0.5%
14	Norway	5	0.5%
15	Turkey	5	0.5%
16	Indonesia	4	0.4%
17	Brazil	3	0.3%
18	Cyprus	3	0.3%
19	Ukraine	3	0.3%
20	Moldova, Republic of	3	0.3%
21	Mongolia	2	0.2%
22	United Arab Emirates	2	0.2%
23	Peru	2	0.2%
24	Poland	2	0.2%
25	Romania	2	0.2%
26	Czech Republic	2	0.2%
27	Argentina	2	0.2%
28	Hungary	2	0.2%
29	Switzerland	2	0.2%
30	Viet Nam	2	0.2%
31	Iraq	1	0.1%
32	Bahrain	1	0.1%
33	Bangladesh	1	0.1%
34	Egypt	1	0.1%
35	Pakistan	1	0.1%
36	United Kingdom	1	0.1%
37	Myanmar	1	0.1%
38	Italy	1	0.1%
39	Latvia	1	0.1%
40	Lithuania	1	0.1%
41	Malaysia	1	0.1%