Rank	Countries/Territories	Count	Percent
1	United States	402	39.4%
2	China	294	28.8%
3	Germany	122	11.9%
4	Latvia	28	2.7%
5	Japan	25	2.4%
6	France	21	2.1%
7	Canada	17	1.7%
8	Saudi Arabia	12	1.2%
9	United Kingdom	12	1.2%
10	Netherlands	7	0.7%
11	Norway	6	0.6%
12	Ireland	6	0.6%
13	India	6	0.6%
14	Brazil	6	0.6%
15	Australia	5	0.5%
16	Iran, Islamic Republic of	5	0.5%
17	Russia	4	0.4%
18	Singapore	4	0.4%
19	Bangladesh	4	0.4%
20	Colombia	4	0.4%
21	Cyprus	4	0.4%
22	Korea, Republic of	3	0.3%
23	Lebanon	2	0.2%
24	Malaysia	2	0.2%
25	Mongolia	2	0.2%
26	Dominican Republic	2	0.2%
27	Argentina	2	0.2%
28	Hungary	2	0.2%
29	Ethiopia	2	0.2%
30	Hong Kong	1	0.1%
31	Indonesia	1	0.1%
32	Egypt	1	0.1%
33	Kuwait	1	0.1%
34	Jamaica	1	0.1%
35	South Africa	1	0.1%
36	Spain	1	0.1%
37	Switzerland	1	0.1%
38	Uganda	1	0.1%
39	United Arab Emirates	1	0.1%