Rank	Countries/Territories	Count	Percent
1	United States	520	39.2%
2	China	427	32.2%
3	Germany	143	10.8%
4	Latvia	62	4.7%
5	Japan	45	3.4%
6	Canada	27	2%
7	Netherlands	17	1.3%
8	Singapore	17	1.3%
9	Norway	12	0.9%
10	Argentina	9	0.7%
11	Malaysia	7	0.5%
12	Korea, Republic of	7	0.5%
13	Cyprus	6	0.5%
14	Australia	5	0.4%
15	Brazil	3	0.2%
16	Hong Kong	3	0.2%
17	Iran, Islamic Republic of	3	0.2%
18	South Africa	2	0.2%
19	Thailand	2	0.2%
20	Bangladesh	2	0.2%
21	India	1	0.1%
22	France	1	0.1%
23	Luxembourg	1	0.1%
24	Moldova, Republic of	1	0.1%
25	Russia	1	0.1%
26	United Kingdom	1	0.1%
27	Sweden	1	0.1%