Rank	Countries/Territories	Count	Percent
1	United States	609	38.9%
2	China	528	33.7%
3	Germany	167	10.7%
4	Latvia	62	4%
5	Japan	48	3.1%
6	Canada	28	1.8%
7	Netherlands	19	1.2%
8	Singapore	17	1.1%
9	Norway	12	0.8%
10	Argentina	9	0.6%
11	Cyprus	8	0.5%
12	France	8	0.5%
13	Malaysia	7	0.4%
14	Korea, Republic of	7	0.4%
15	Australia	6	0.4%
16	Hong Kong	5	0.3%
17	Brazil	4	0.3%
18	United Kingdom	4	0.3%
19	Iran, Islamic Republic of	3	0.2%
20	Sweden	3	0.2%
21	South Africa	2	0.1%
22	Thailand	2	0.1%
23	Bangladesh	2	0.1%
24	India	1	0.1%
25	Luxembourg	1	0.1%
26	Moldova, Republic of	1	0.1%
27	Russia	1	0.1%
28	Turkey	1	0.1%
29	Switzerland	1	0.1%