Rank	Countries/Territories	Count	Percent
1	United States	594	39.7%
2	China	520	34.8%
3	Germany	129	8.6%
4	Japan	64	4.3%
5	Canada	28	1.9%
6	Mongolia	28	1.9%
7	Netherlands	16	1.1%
8	France	13	0.9%
9	Switzerland	13	0.9%
10	Sweden	11	0.7%
11	Singapore	10	0.7%
12	Australia	8	0.5%
13	Cyprus	7	0.5%
14	Taiwan	7	0.5%
15	Spain	5	0.3%
16	India	5	0.3%
17	Bangladesh	4	0.3%
18	Ukraine	4	0.3%
19	United Kingdom	3	0.2%
20	Peru	3	0.2%
21	Russia	3	0.2%
22	Hong Kong	3	0.2%
23	Korea, Republic of	2	0.1%
24	Latvia	2	0.1%
25	Malaysia	2	0.1%
26	Belgium	2	0.1%
27	Bulgaria	2	0.1%
28	Tunisia	2	0.1%
29	Norway	1	0.1%
30	South Africa	1	0.1%
31	Argentina	1	0.1%
32	Ireland	1	0.1%
33	Italy	1	0.1%