Rank	Countries/Territories	Count	Percent
1	United States	638	39.2%
2	China	356	21.9%
3	Germany	201	12.4%
4	Spain	79	4.9%
5	Japan	61	3.7%
6	Korea, Republic of	61	3.7%
7	Singapore	22	1.4%
8	Canada	20	1.2%
9	France	19	1.2%
10	Switzerland	16	1%
11	Netherlands	15	0.9%
12	Sweden	14	0.9%
13	Australia	12	0.7%
14	Portugal	11	0.7%
15	United Kingdom	11	0.7%
16	India	10	0.6%
17	Romania	9	0.6%
18	Russia	7	0.4%
19	Brazil	7	0.4%
20	Viet Nam	6	0.4%
21	Cyprus	5	0.3%
22	Iran, Islamic Republic of	5	0.3%
23	Egypt	4	0.2%
24	Pakistan	4	0.2%
25	Mexico	4	0.2%
26	Italy	3	0.2%
27	Denmark	3	0.2%
28	Ireland	3	0.2%
29	Indonesia	3	0.2%
30	Israel	2	0.1%
31	Czech Republic	2	0.1%
32	Argentina	2	0.1%
33	Bulgaria	2	0.1%
34	Philippines	2	0.1%
35	Mongolia	2	0.1%
36	Turkey	2	0.1%
37	Ukraine	1	0.1%
38	Serbia	1	0.1%
39	Bangladesh	1	0.1%
40	Hong Kong	1	0.1%