Rank	Countries/Territories	Count	Percent
1	United States	459	42.1%
2	China	374	34.3%
3	Germany	55	5%
4	Russia	51	4.7%
5	India	33	3%
6	Korea, Republic of	16	1.5%
7	Japan	13	1.2%
8	Ireland	11	1%
9	Hong Kong	11	1%
10	United Kingdom	10	0.9%
11	Singapore	8	0.7%
12	Netherlands	5	0.5%
13	Brazil	5	0.5%
14	Australia	4	0.4%
15	Turkey	4	0.4%
16	Poland	3	0.3%
17	Taiwan	3	0.3%
18	Iran, Islamic Republic of	3	0.3%
19	Italy	2	0.2%
20	Argentina	2	0.2%
21	Canada	2	0.2%
22	Pakistan	2	0.2%
23	Ukraine	2	0.2%
24	South Africa	2	0.2%
25	Spain	1	0.1%
26	Norway	1	0.1%
27	Malaysia	1	0.1%
28	Philippines	1	0.1%
29	Egypt	1	0.1%
30	Algeria	1	0.1%
31	Bangladesh	1	0.1%
32	Belgium	1	0.1%
33	Israel	1	0.1%
34	Iceland	1	0.1%