Rank	Countries/Territories	Count	Percent
1	United States	503	42.9%
2	China	347	29.6%
3	Germany	121	10.3%
4	Latvia	40	3.4%
5		31	2.6%
6	Japan	17	1.5%
7	Netherlands	16	1.4%
8	Singapore	14	1.2%
9	Taiwan	13	1.1%
10	Canada	9	0.8%
11	Lithuania	7	0.6%
12	India	6	0.5%
13	France	5	0.4%
14	Australia	5	0.4%
15	Switzerland	5	0.4%
16	Norway	5	0.4%
17	United Kingdom	3	0.3%
18	Turkey	2	0.2%
19	Ukraine	2	0.2%
20	Hungary	2	0.2%
21	Italy	2	0.2%
22	Argentina	2	0.2%
23	Cyprus	2	0.2%
24	Iran, Islamic Republic of	2	0.2%
25	Ireland	1	0.1%
26	Hong Kong	1	0.1%
27	Malaysia	1	0.1%
28	Morocco	1	0.1%
29	Austria	1	0.1%
30	Bosnia and Herzegovina	1	0.1%
31	New Zealand	1	0.1%
32	Philippines	1	0.1%
33	Poland	1	0.1%
34	South Africa	1	0.1%
35	Tunisia	1	0.1%