Rank	Countries/Territories	Count	Percent
1	United States	519	38.8%
2	China	402	30.1%
3	Germany	97	7.3%
4	Russia	67	5%
5	France	41	3.1%
6	United Kingdom	27	2%
7	India	21	1.6%
8	Canada	20	1.5%
9	Singapore	20	1.5%
10	Netherlands	16	1.2%
11	Sweden	15	1.1%
12	Korea, Republic of	15	1.1%
13	Japan	14	1%
14	Australia	11	0.8%
15	Iran, Islamic Republic of	10	0.7%
16	Taiwan	5	0.4%
17	Cyprus	4	0.3%
18	Argentina	3	0.2%
19	Hong Kong	3	0.2%
20	Turkey	3	0.2%
21	Switzerland	3	0.2%
22	Norway	3	0.2%
23	Pakistan	3	0.2%
24	Poland	2	0.1%
25	Saudi Arabia	2	0.1%
26	Ukraine	2	0.1%
27	Israel	2	0.1%
28	Bahrain	2	0.1%
29	Egypt	1	0.1%
30	Finland	1	0.1%
31	Malaysia	1	0.1%
32	Ireland	1	0.1%
33	Viet Nam	1	0.1%