Rank	Countries/Territories	Count	Percent
1	United States	319	33.9%
2	China	231	24.6%
3	Germany	76	8.1%
4	Russia	36	3.8%
5	Latvia	34	3.6%
6	Japan	25	2.7%
7	Singapore	21	2.2%
8	Australia	21	2.2%
9	India	18	1.9%
10	France	18	1.9%
11	Saudi Arabia	17	1.8%
12	Netherlands	17	1.8%
13	Ecuador	16	1.7%
14	United Kingdom	10	1.1%
15	Canada	9	1%
16	Taiwan	8	0.9%
17	Korea, Republic of	7	0.7%
18	Switzerland	7	0.7%
19	Ireland	6	0.6%
20	Colombia	5	0.5%
21	Cyprus	5	0.5%
22	Spain	4	0.4%
23	Egypt	3	0.3%
24	Italy	3	0.3%
25	Israel	2	0.2%
26	Iran, Islamic Republic of	2	0.2%
27	Hong Kong	2	0.2%
28	Argentina	2	0.2%
29	Bangladesh	2	0.2%
30	Thailand	2	0.2%
31	Turkey	2	0.2%
32	Ukraine	2	0.2%
33	Malaysia	2	0.2%
34	Poland	2	0.2%
35	Puerto Rico	2	0.2%
36	Norway	1	0.1%
37	Mongolia	1	0.1%