Rank	Countries/Territories	Count	Percent
1	United States	541	43.5%
2	China	283	22.8%
3	Germany	156	12.6%
4	France	22	1.8%
5	Pakistan	21	1.7%
6	Netherlands	18	1.4%
7	India	18	1.4%
8	Denmark	18	1.4%
9	Korea, Republic of	14	1.1%
10	Taiwan	14	1.1%
11	Japan	12	1%
12	Hong Kong	11	0.9%
13	Singapore	10	0.8%
14	Russia	9	0.7%
15	Ireland	9	0.7%
16	Canada	9	0.7%
17	United Kingdom	9	0.7%
18	Viet Nam	8	0.6%
19	Sweden	7	0.6%
20	Iran, Islamic Republic of	6	0.5%
21	Australia	4	0.3%
22	Austria	4	0.3%
23	Cyprus	4	0.3%
24	Spain	4	0.3%
25	South Africa	3	0.2%
26	Ukraine	3	0.2%
27	Malaysia	3	0.2%
28	Brazil	3	0.2%
29	Israel	3	0.2%
30	Italy	3	0.2%
31	Morocco	2	0.2%
32	Norway	2	0.2%
33	Philippines	2	0.2%
34	United Arab Emirates	2	0.2%
35	Turkey	2	0.2%
36	Mexico	1	0.1%
37	Indonesia	1	0.1%
38	Argentina	1	0.1%
39	Ecuador	1	0.1%