Rank	Countries/Territories	Count	Percent
1	United States	610	46.2%
2	China	352	26.7%
3	Germany	60	4.5%
4	Canada	55	4.2%
5	India	39	3%
6	France	31	2.3%
7	Taiwan	29	2.2%
8	Japan	26	2%
9	Russia	23	1.7%
10	Australia	11	0.8%
11	Ireland	10	0.8%
12	United Kingdom	10	0.8%
13	Korea, Republic of	10	0.8%
14	Singapore	6	0.5%
15	Ukraine	5	0.4%
16	Argentina	5	0.4%
17	Italy	4	0.3%
18	Netherlands	4	0.3%
19	Brazil	3	0.2%
20	Iran, Islamic Republic of	3	0.2%
21	Greece	3	0.2%
22	Hong Kong	3	0.2%
23	Israel	2	0.2%
24	Mongolia	2	0.2%
25	Malaysia	2	0.2%
26	Turkey	2	0.2%
27	South Africa	1	0.1%
28	Spain	1	0.1%
29	Malta	1	0.1%
30	Kenya	1	0.1%
31	Norway	1	0.1%
32	Poland	1	0.1%
33	Hungary	1	0.1%
34	Bangladesh	1	0.1%
35	Denmark	1	0.1%
36	Finland	1	0.1%