Rank	Countries/Territories	Count	Percent
1	United States	506	38.8%
2	China	356	27.3%
3	Russia	109	8.4%
4	Germany	53	4.1%
5	India	46	3.5%
6	Brazil	21	1.6%
7	Italy	20	1.5%
8	Japan	18	1.4%
9	France	17	1.3%
10	United Kingdom	16	1.2%
11	Korea, Republic of	13	1%
12	Latvia	13	1%
13	Portugal	12	0.9%
14	Greece	11	0.8%
15	Australia	10	0.8%
16	Mexico	8	0.6%
17	Netherlands	7	0.5%
18	Canada	7	0.5%
19	Hong Kong	6	0.5%
20	Spain	6	0.5%
21	Ireland	5	0.4%
22	Argentina	5	0.4%
23	Viet Nam	4	0.3%
24	Turkey	3	0.2%
25	Finland	3	0.2%
26	Singapore	3	0.2%
27	South Africa	2	0.2%
28	Romania	2	0.2%
29	Sweden	2	0.2%
30	Switzerland	2	0.2%
31	Taiwan	2	0.2%
32	Mongolia	2	0.2%
33	Bangladesh	2	0.2%
34	Iceland	2	0.2%
35	Ukraine	2	0.2%
36	Malta	2	0.2%
37	Iran, Islamic Republic of	1	0.1%
38	Czech Republic	1	0.1%
39	Egypt	1	0.1%
40	Nepal	1	0.1%
41	New Zealand	1	0.1%
42	Lithuania	1	0.1%
43	Malaysia	1	0.1%