Rank	Countries/Territories	Count	Percent
1	United States	308	34.8%
2	China	140	15.8%
3	Japan	115	13%
4	Germany	72	8.1%
5	Russia	40	4.5%
6	Singapore	32	3.6%
7	Korea, Republic of	30	3.4%
8	United Kingdom	17	1.9%
9	Iran, Islamic Republic of	16	1.8%
10	Netherlands	15	1.7%
11	Spain	9	1%
12	Poland	7	0.8%
13	France	7	0.8%
14	Canada	7	0.8%
15	Egypt	6	0.7%
16	India	6	0.7%
17	Switzerland	6	0.7%
18	Cyprus	5	0.6%
19	Bangladesh	5	0.6%
20	Belgium	4	0.5%
21	Australia	4	0.5%
22	Taiwan	4	0.5%
23	Turkey	4	0.5%
24	Viet Nam	3	0.3%
25	Pakistan	3	0.3%
26	Italy	3	0.3%
27	Chile	3	0.3%
28	Hong Kong	2	0.2%
29	Mongolia	2	0.2%
30	Norway	2	0.2%
31	Sweden	2	0.2%
32	Romania	1	0.1%
33	Nigeria	1	0.1%
34	Israel	1	0.1%
35	Malaysia	1	0.1%
36	Denmark	1	0.1%