Rank	Countries/Territories	Count	Percent
1	United States	287	37.2%
2	China	252	32.6%
3	Germany	60	7.8%
4	Japan	25	3.2%
5	Korea, Republic of	14	1.8%
6	Canada	14	1.8%
7		12	1.6%
8	United Kingdom	12	1.6%
9	Singapore	12	1.6%
10	Netherlands	11	1.4%
11	Bulgaria	8	1%
12	Hong Kong	7	0.9%
13	South Africa	7	0.9%
14	Poland	4	0.5%
15	Denmark	4	0.5%
16	France	3	0.4%
17	India	3	0.4%
18	Cyprus	3	0.4%
19	Czech Republic	3	0.4%
20	Australia	3	0.4%
21	Spain	3	0.4%
22	Sweden	3	0.4%
23	Ukraine	2	0.3%
24	Morocco	2	0.3%
25	New Zealand	2	0.3%
26	Latvia	2	0.3%
27	Lithuania	2	0.3%
28	Bangladesh	2	0.3%
29	Brazil	2	0.3%
30	Iran, Islamic Republic of	2	0.3%
31	Egypt	2	0.3%
32	Belgium	1	0.1%
33	Mongolia	1	0.1%
34	Switzerland	1	0.1%
35	Syrian Arab Republic	1	0.1%