Rank	Countries/Territories	Count	Percent
1	United States	467	42%
2	China	203	18.3%
3	Germany	94	8.5%
4	United Kingdom	42	3.8%
5	Czech Republic	35	3.2%
6	India	30	2.7%
7	Canada	29	2.6%
8	Australia	28	2.5%
9	Korea, Republic of	20	1.8%
10	Netherlands	18	1.6%
11	Japan	17	1.5%
12	Taiwan	13	1.2%
13	Hong Kong	10	0.9%
14	Italy	9	0.8%
15	Greece	8	0.7%
16	Cyprus	7	0.6%
17	Iran, Islamic Republic of	6	0.5%
18	Slovenia	6	0.5%
19	South Africa	5	0.5%
20	Poland	5	0.5%
21	Romania	5	0.5%
22	Ireland	5	0.5%
23	France	5	0.5%
24	Egypt	4	0.4%
25	Israel	4	0.4%
26	Brazil	4	0.4%
27	Russia	4	0.4%
28	Singapore	4	0.4%
29	Switzerland	4	0.4%
30	Ukraine	3	0.3%
31	Thailand	2	0.2%
32	Turkey	2	0.2%
33	Pakistan	2	0.2%
34	Bosnia and Herzegovina	2	0.2%
35	Albania	2	0.2%
36	Estonia	2	0.2%
37	Argentina	1	0.1%
38	Bahrain	1	0.1%
39	Norway	1	0.1%
40	Lao People's Democratic Republic	1	0.1%
41	Viet Nam	1	0.1%