Rank	Countries/Territories	Count	Percent
1	United States	452	39.1%
2	China	240	20.7%
3	Germany	148	12.8%
4	Japan	57	4.9%
5	Korea, Republic of	55	4.8%
6	Spain	22	1.9%
7	Singapore	18	1.6%
8	Canada	18	1.6%
9	Netherlands	15	1.3%
10	Switzerland	15	1.3%
11	France	14	1.2%
12	Sweden	13	1.1%
13	Romania	9	0.8%
14	India	9	0.8%
15	Brazil	7	0.6%
16	United Kingdom	7	0.6%
17	Viet Nam	6	0.5%
18	Russia	6	0.5%
19	Australia	5	0.4%
20	Iran, Islamic Republic of	5	0.4%
21	Pakistan	4	0.3%
22	Mexico	4	0.3%
23	Italy	3	0.3%
24	Ireland	3	0.3%
25	Cyprus	3	0.3%
26	Denmark	3	0.3%
27	Egypt	3	0.3%
28	Argentina	2	0.2%
29	Bulgaria	2	0.2%
30	Israel	2	0.2%
31	Indonesia	2	0.2%
32	Philippines	2	0.2%
33	Serbia	1	0.1%
34	Turkey	1	0.1%
35	Hong Kong	1	0.1%