Rank	Countries/Territories	Count	Percent
1	United States	293	33.3%
2	China	217	24.7%
3	Germany	129	14.7%
4	Korea, Republic of	24	2.7%
5	United Kingdom	24	2.7%
6	Netherlands	21	2.4%
7	France	18	2%
8	Japan	17	1.9%
9	India	9	1%
10	Bulgaria	9	1%
11	Australia	8	0.9%
12	Canada	7	0.8%
13	Iran, Islamic Republic of	6	0.7%
14	Ireland	6	0.7%
15	Russia	6	0.7%
16	Switzerland	6	0.7%
17	Cyprus	5	0.6%
18	Egypt	4	0.5%
19	Colombia	4	0.5%
20	Mexico	4	0.5%
21	Philippines	4	0.5%
22	Singapore	4	0.5%
23	South Africa	4	0.5%
24	Spain	4	0.5%
25	Italy	4	0.5%
26	Saudi Arabia	3	0.3%
27	Taiwan	3	0.3%
28	Morocco	3	0.3%
29	Czech Republic	3	0.3%
30	Hong Kong	3	0.3%
31	Ghana	2	0.2%
32	Brazil	2	0.2%
33	Poland	2	0.2%
34	Israel	2	0.2%
35	Malaysia	2	0.2%
36	Turkey	2	0.2%
37	Slovakia	2	0.2%
38	United Arab Emirates	2	0.2%
39	Viet Nam	1	0.1%
40	Ukraine	1	0.1%
41	Kazakhstan	1	0.1%
42	Indonesia	1	0.1%
43	Portugal	1	0.1%
44	Romania	1	0.1%
45	Pakistan	1	0.1%
46	Argentina	1	0.1%
47	Azerbaijan	1	0.1%
48	Hungary	1	0.1%
49	Denmark	1	0.1%