Rank	Countries/Territories	Count	Percent
1	United States	519	40%
2	China	375	28.9%
3	Germany	113	8.7%
4	Netherlands	35	2.7%
5	Russia	31	2.4%
6	Japan	27	2.1%
7	Czech Republic	26	2%
8	France	18	1.4%
9	Canada	15	1.2%
10	Australia	14	1.1%
11	Cyprus	13	1%
12	Argentina	9	0.7%
13		8	0.6%
14	Hong Kong	8	0.6%
15	Ukraine	8	0.6%
16	Singapore	7	0.5%
17	South Africa	7	0.5%
18	United Kingdom	6	0.5%
19	Kazakhstan	6	0.5%
20	Latvia	6	0.5%
21	India	6	0.5%
22	Korea, Republic of	5	0.4%
23	Portugal	5	0.4%
24	Mongolia	4	0.3%
25	Iran, Islamic Republic of	4	0.3%
26	Ireland	4	0.3%
27	Norway	3	0.2%
28	Pakistan	3	0.2%
29	Malaysia	2	0.2%
30	Sweden	2	0.2%
31	Denmark	2	0.2%
32	Georgia	1	0.1%
33	Italy	1	0.1%
34	Afghanistan	1	0.1%
35	Bangladesh	1	0.1%
36	Switzerland	1	0.1%
37	Taiwan	1	0.1%
38	Thailand	1	0.1%
39	Lithuania	1	0.1%