Rank	Countries/Territories	Count	Percent
1	United States	340	45.3%
2	China	151	20.1%
3	Japan	25	3.3%
4	Germany	20	2.7%
5	Russia	19	2.5%
6	Singapore	18	2.4%
7	Brazil	18	2.4%
8	India	16	2.1%
9	Italy	15	2%
10	Iran, Islamic Republic of	14	1.9%
11	Korea, Republic of	12	1.6%
12	Netherlands	10	1.3%
13	Poland	10	1.3%
14	Hong Kong	7	0.9%
15	Canada	7	0.9%
16	Egypt	6	0.8%
17	Taiwan	6	0.8%
18	Ukraine	6	0.8%
19	United Kingdom	5	0.7%
20	Turkey	5	0.7%
21	Saudi Arabia	4	0.5%
22	Sweden	3	0.4%
23	Ireland	3	0.4%
24	France	3	0.4%
25	Denmark	3	0.4%
26	Argentina	2	0.3%
27	Australia	2	0.3%
28	Austria	2	0.3%
29	Greece	2	0.3%
30	Indonesia	2	0.3%
31	Mexico	2	0.3%
32	Romania	2	0.3%
33	Spain	2	0.3%
34	Sri Lanka	1	0.1%
35	Slovakia	1	0.1%
36	Portugal	1	0.1%
37	Malaysia	1	0.1%
38	Albania	1	0.1%
39	Belgium	1	0.1%
40	Yemen	1	0.1%
41	Thailand	1	0.1%