Rank	Countries/Territories	Count	Percent
1	United States	495	39.9%
2	China	370	29.8%
3	Germany	86	6.9%
4	Russia	60	4.8%
5	France	34	2.7%
6	United Kingdom	27	2.2%
7	Singapore	20	1.6%
8	Canada	18	1.5%
9	India	16	1.3%
10	Netherlands	16	1.3%
11	Sweden	15	1.2%
12	Japan	13	1%
13	Korea, Republic of	11	0.9%
14	Iran, Islamic Republic of	10	0.8%
15	Australia	10	0.8%
16	Taiwan	5	0.4%
17	Turkey	3	0.2%
18	Switzerland	3	0.2%
19	Argentina	3	0.2%
20	Cyprus	3	0.2%
21	Hong Kong	3	0.2%
22	Norway	3	0.2%
23	Pakistan	3	0.2%
24	Poland	2	0.2%
25	Israel	2	0.2%
26	Bahrain	2	0.2%
27	Ukraine	2	0.2%
28	Saudi Arabia	2	0.2%
29	Malaysia	1	0.1%
30	Viet Nam	1	0.1%
31	Egypt	1	0.1%
32	Finland	1	0.1%