Rank	Countries/Territories	Count	Percent
1	United States	263	37.7%
2	China	199	28.5%
3	Germany	72	10.3%
4	Japan	37	5.3%
5	Russia	21	3%
6	Saudi Arabia	13	1.9%
7	India	12	1.7%
8	Singapore	11	1.6%
9	Netherlands	9	1.3%
10	France	7	1%
11	Thailand	6	0.9%
12	Cyprus	5	0.7%
13	Argentina	4	0.6%
14	Brazil	4	0.6%
15	Viet Nam	4	0.6%
16	Mongolia	4	0.6%
17	Canada	3	0.4%
18	Australia	3	0.4%
19	Iran, Islamic Republic of	2	0.3%
20	Latvia	2	0.3%
21	Malaysia	2	0.3%
22	Mauritius	2	0.3%
23	Mexico	2	0.3%
24	Ukraine	2	0.3%
25	United Kingdom	2	0.3%
26	Norway	1	0.1%
27	Pakistan	1	0.1%
28	Sweden	1	0.1%
29	Libya	1	0.1%
30	Korea, Republic of	1	0.1%
31	Ireland	1	0.1%
32	Bangladesh	1	0.1%