Rank	Countries/Territories	Count	Percent
1	United States	515	39%
2	China	295	22.4%
3	Germany	137	10.4%
4	Korea, Republic of	65	4.9%
5	United Kingdom	32	2.4%
6	Mexico	24	1.8%
7	Netherlands	24	1.8%
8	France	24	1.8%
9	Japan	17	1.3%
10	Ireland	14	1.1%
11	Australia	14	1.1%
12	Taiwan	12	0.9%
13	India	11	0.8%
14	Canada	10	0.8%
15	Bulgaria	9	0.7%
16	Iran, Islamic Republic of	9	0.7%
17	Turkey	7	0.5%
18	Switzerland	6	0.5%
19	Russia	6	0.5%
20	Brazil	6	0.5%
21	Cyprus	6	0.5%
22	Viet Nam	5	0.4%
23	Saudi Arabia	4	0.3%
24	Singapore	4	0.3%
25	South Africa	4	0.3%
26	Spain	4	0.3%
27	Egypt	4	0.3%
28	Hong Kong	4	0.3%
29	Colombia	4	0.3%
30	Italy	4	0.3%
31	Philippines	4	0.3%
32	Indonesia	3	0.2%
33	Czech Republic	3	0.2%
34	Morocco	3	0.2%
35	Romania	3	0.2%
36	Slovakia	2	0.2%
37	United Arab Emirates	2	0.2%
38	Ghana	2	0.2%
39	Argentina	2	0.2%
40	Israel	2	0.2%
41	Poland	2	0.2%
42	Mongolia	2	0.2%
43	Malaysia	2	0.2%
44	Portugal	1	0.1%
45	Pakistan	1	0.1%
46	Kazakhstan	1	0.1%
47	Azerbaijan	1	0.1%
48	Hungary	1	0.1%
49	Denmark	1	0.1%
50	Ukraine	1	0.1%