Rank	Countries/Territories	Count	Percent
1	United States	406	38.1%
2	China	369	34.6%
3	Germany	65	6.1%
4	Canada	27	2.5%
5	Japan	26	2.4%
6	Denmark	18	1.7%
7	Netherlands	17	1.6%
8	India	16	1.5%
9	Korea, Republic of	15	1.4%
10	France	15	1.4%
11	Spain	12	1.1%
12	Australia	11	1%
13	Russia	10	0.9%
14	Cyprus	9	0.8%
15	Hong Kong	6	0.6%
16	Viet Nam	5	0.5%
17	Taiwan	3	0.3%
18	Thailand	3	0.3%
19	Brazil	3	0.3%
20	Singapore	3	0.3%
21	Iran, Islamic Republic of	3	0.3%
22	Belarus	3	0.3%
23	Chile	2	0.2%
24	Italy	2	0.2%
25	Malaysia	2	0.2%
26	Mongolia	2	0.2%
27	Poland	2	0.2%
28	Romania	2	0.2%
29	Ukraine	2	0.2%
30	United Kingdom	2	0.2%
31	Switzerland	2	0.2%
32	Norway	1	0.1%
33	Serbia	1	0.1%
34	Belgium	1	0.1%