Rank	Countries/Territories	Count	Percent
1	United States	508	39.3%
2	China	425	32.8%
3	Germany	77	6%
4	Japan	38	2.9%
5	Netherlands	33	2.6%
6	France	30	2.3%
7	Canada	15	1.2%
8	Ireland	15	1.2%
9	Australia	14	1.1%
10	Brazil	11	0.9%
11	Philippines	11	0.9%
12	Hong Kong	10	0.8%
13	Turkey	10	0.8%
14	United Kingdom	8	0.6%
15	Korea, Republic of	8	0.6%
16	Cyprus	7	0.5%
17	Indonesia	6	0.5%
18	Singapore	6	0.5%
19	Taiwan	5	0.4%
20	Argentina	5	0.4%
21	Mexico	5	0.4%
22	Austria	4	0.3%
23	Czech Republic	4	0.3%
24	India	4	0.3%
25	Romania	4	0.3%
26	Nigeria	3	0.2%
27	Slovakia	3	0.2%
28	Malaysia	3	0.2%
29	Iraq	3	0.2%
30	Denmark	3	0.2%
31	Iran, Islamic Republic of	2	0.2%
32	New Zealand	2	0.2%
33	Thailand	2	0.2%
34	Togo	2	0.2%
35	Norway	2	0.2%
36	Russia	2	0.2%
37	Italy	1	0.1%
38	Georgia	1	0.1%
39	Greece	1	0.1%
40	Ukraine	1	0.1%