Rank	Countries/Territories	Count	Percent
1	United States	526	40.3%
2	China	452	34.6%
3	Germany	100	7.7%
4	Canada	32	2.5%
5	Latvia	28	2.1%
6	France	21	1.6%
7	Japan	18	1.4%
8	Australia	14	1.1%
9	Netherlands	11	0.8%
10	Ukraine	10	0.8%
11	United Kingdom	9	0.7%
12	India	9	0.7%
13	Ireland	8	0.6%
14	Singapore	7	0.5%
15	Brazil	6	0.5%
16	Cyprus	6	0.5%
17	Iran, Islamic Republic of	5	0.4%
18	Hong Kong	5	0.4%
19	Norway	4	0.3%
20	Thailand	3	0.2%
21	Turkey	3	0.2%
22	Bangladesh	3	0.2%
23	Georgia	2	0.2%
24	Greece	2	0.2%
25	Spain	2	0.2%
26	Sweden	2	0.2%
27	Tanzania, United Republic of	2	0.2%
28	Philippines	2	0.2%
29	Kenya	2	0.2%
30	Viet Nam	2	0.2%
31	Morocco	2	0.2%
32	Italy	1	0.1%
33	Portugal	1	0.1%
34	Malaysia	1	0.1%
35	Mongolia	1	0.1%
36	Hungary	1	0.1%
37	Argentina	1	0.1%
38	Austria	1	0.1%