Rank	Countries/Territories	Count	Percent
1	United States	348	34.3%
2	China	333	32.8%
3	Germany	134	13.2%
4	Russia	37	3.6%
5	Mexico	28	2.8%
6	Japan	14	1.4%
7	Australia	10	1%
8	Netherlands	9	0.9%
9	Singapore	8	0.8%
10	United Kingdom	8	0.8%
11	France	8	0.8%
12	Ireland	8	0.8%
13	Italy	7	0.7%
14	Cyprus	6	0.6%
15	Egypt	5	0.5%
16	Romania	5	0.5%
17	Ukraine	4	0.4%
18	Latvia	4	0.4%
19	Canada	4	0.4%
20	Belgium	3	0.3%
21	Brazil	3	0.3%
22	Bulgaria	3	0.3%
23	Lithuania	3	0.3%
24	Korea, Republic of	3	0.3%
25	Mongolia	3	0.3%
26	Spain	3	0.3%
27	Turkey	2	0.2%
28	Denmark	2	0.2%
29	Israel	2	0.2%
30	India	2	0.2%
31	Iran, Islamic Republic of	2	0.2%
32	Hong Kong	1	0.1%
33	Hungary	1	0.1%
34		1	0.1%
35	Philippines	1	0.1%