Rank	Countries/Territories	Count	Percent
1	United States	490	40%
2	China	252	20.6%
3	Germany	156	12.7%
4	Japan	57	4.7%
5	Korea, Republic of	56	4.6%
6	Spain	24	2%
7	Canada	19	1.6%
8	Singapore	18	1.5%
9	Switzerland	16	1.3%
10	Netherlands	15	1.2%
11	Sweden	14	1.1%
12	France	14	1.1%
13	India	9	0.7%
14	Romania	9	0.7%
15	Brazil	7	0.6%
16	United Kingdom	7	0.6%
17	Australia	6	0.5%
18	Russia	6	0.5%
19	Viet Nam	6	0.5%
20	Iran, Islamic Republic of	5	0.4%
21	Mexico	4	0.3%
22	Pakistan	4	0.3%
23	Italy	3	0.2%
24	Ireland	3	0.2%
25	Cyprus	3	0.2%
26	Denmark	3	0.2%
27	Egypt	3	0.2%
28	Argentina	2	0.2%
29	Bulgaria	2	0.2%
30	Israel	2	0.2%
31	Indonesia	2	0.2%
32	Turkey	2	0.2%
33	Philippines	2	0.2%
34	Portugal	1	0.1%
35	Serbia	1	0.1%
36	Ukraine	1	0.1%
37	Hong Kong	1	0.1%