Rank	Countries/Territories	Count	Percent
1	United States	511	45.9%
2	China	387	34.7%
3	Germany	91	8.2%
4	France	40	3.6%
5	Netherlands	12	1.1%
6	Mongolia	6	0.5%
7	Ukraine	6	0.5%
8	India	6	0.5%
9	Ireland	5	0.4%
10	Japan	5	0.4%
11	Cyprus	5	0.4%
12	Canada	4	0.4%
13	Hong Kong	4	0.4%
14	United Kingdom	4	0.4%
15	Singapore	4	0.4%
16	Sweden	4	0.4%
17	Malaysia	2	0.2%
18	Norway	2	0.2%
19	Philippines	2	0.2%
20	Iran, Islamic Republic of	2	0.2%
21	Argentina	2	0.2%
22	Belgium	2	0.2%
23	Georgia	2	0.2%
24	Finland	1	0.1%
25	Algeria	1	0.1%
26	Latvia	1	0.1%
27	Italy	1	0.1%
28	Russia	1	0.1%
29	Switzerland	1	0.1%