Rank	Countries/Territories	Count	Percent
1	United States	506	42.1%
2	China	422	35.1%
3	Germany	55	4.6%
4	Russia	51	4.2%
5	India	37	3.1%
6	Japan	21	1.7%
7	Korea, Republic of	19	1.6%
8	Ireland	11	0.9%
9	Hong Kong	11	0.9%
10	United Kingdom	10	0.8%
11	Singapore	9	0.7%
12	Netherlands	5	0.4%
13	Brazil	5	0.4%
14	Australia	4	0.3%
15	Turkey	4	0.3%
16	Poland	3	0.2%
17	Taiwan	3	0.2%
18	Norway	3	0.2%
19	Iran, Islamic Republic of	3	0.2%
20	Argentina	2	0.2%
21	Canada	2	0.2%
22	Pakistan	2	0.2%
23	South Africa	2	0.2%
24	Italy	2	0.2%
25	Ukraine	2	0.2%
26	Spain	1	0.1%
27	Philippines	1	0.1%
28	Egypt	1	0.1%
29	Algeria	1	0.1%
30	Bangladesh	1	0.1%
31	Belgium	1	0.1%
32	Iceland	1	0.1%
33	Israel	1	0.1%
34	Malaysia	1	0.1%