Rank	Countries/Territories	Count	Percent
1	United States	395	35.9%
2	China	331	30.1%
3	Germany	156	14.2%
4	Canada	32	2.9%
5	Japan	22	2%
6	India	15	1.4%
7	France	13	1.2%
8	Ukraine	12	1.1%
9	Singapore	12	1.1%
10	Switzerland	10	0.9%
11	Cyprus	10	0.9%
12	Egypt	9	0.8%
13	Netherlands	9	0.8%
14	Turkey	6	0.5%
15	Australia	6	0.5%
16	Brazil	6	0.5%
17	Jordan	5	0.5%
18	Iran, Islamic Republic of	4	0.4%
19	Taiwan	4	0.4%
20	United Kingdom	4	0.4%
21	Malaysia	4	0.4%
22	Norway	3	0.3%
23	Spain	3	0.3%
24	Argentina	3	0.3%
25	Chile	3	0.3%
26	Bangladesh	2	0.2%
27	Greece	2	0.2%
28	Poland	2	0.2%
29	Russia	2	0.2%
30	Mongolia	2	0.2%
31	Myanmar	2	0.2%
32	Thailand	2	0.2%
33	Italy	2	0.2%
34	Viet Nam	1	0.1%
35	Pakistan	1	0.1%
36	Hong Kong	1	0.1%
37	Georgia	1	0.1%
38	Ireland	1	0.1%
39	Korea, Republic of	1	0.1%