Rank	Countries/Territories	Count	Percent
1	United States	461	37.9%
2	China	357	29.4%
3	Germany	117	9.6%
4	India	55	4.5%
5	Japan	25	2.1%
6	Mongolia	18	1.5%
7	Korea, Republic of	17	1.4%
8	Canada	14	1.2%
9	France	13	1.1%
10	Netherlands	12	1%
11	Singapore	12	1%
12	Taiwan	12	1%
13	Malaysia	11	0.9%
14	Hong Kong	10	0.8%
15	Italy	10	0.8%
16	Croatia	9	0.7%
17	Australia	8	0.7%
18	Iran, Islamic Republic of	6	0.5%
19	United Kingdom	5	0.4%
20	Ireland	4	0.3%
21	Indonesia	4	0.3%
22	Argentina	4	0.3%
23	Latvia	4	0.3%
24	Sweden	4	0.3%
25	Romania	4	0.3%
26	Cyprus	3	0.2%
27	Bulgaria	2	0.2%
28	Bangladesh	2	0.2%
29	Greece	2	0.2%
30	Russia	2	0.2%
31	Thailand	2	0.2%
32	Turkey	2	0.2%
33	Spain	1	0.1%
34	Nigeria	1	0.1%
35	Poland	1	0.1%
36	Belgium	1	0.1%
37	Egypt	1	0.1%