Rank	Countries/Territories	Count	Percent
1	United States	554	49.7%
2	China	255	22.9%
3	Germany	90	8.1%
4	India	50	4.5%
5	Korea, Republic of	24	2.2%
6	Japan	19	1.7%
7	Russia	16	1.4%
8	Canada	16	1.4%
9	Brazil	13	1.2%
10	Ireland	13	1.2%
11	Netherlands	6	0.5%
12	Taiwan	6	0.5%
13	Australia	4	0.4%
14	United Kingdom	4	0.4%
15	Argentina	3	0.3%
16	Hong Kong	3	0.3%
17	France	3	0.3%
18	Portugal	3	0.3%
19	Turkey	3	0.3%
20	South Africa	2	0.2%
21	Spain	2	0.2%
22	Italy	2	0.2%
23	Lithuania	2	0.2%
24	Austria	2	0.2%
25	Belgium	2	0.2%
26	Finland	2	0.2%
27	Cyprus	2	0.2%
28	Denmark	1	0.1%
29	Georgia	1	0.1%
30	Israel	1	0.1%
31	Indonesia	1	0.1%
32	Iran, Islamic Republic of	1	0.1%
33	Morocco	1	0.1%
34	Serbia	1	0.1%
35	Singapore	1	0.1%
36	Slovakia	1	0.1%
37	Norway	1	0.1%
38	Thailand	1	0.1%
39	Uzbekistan	1	0.1%
40	Viet Nam	1	0.1%