Rank	Countries/Territories	Count	Percent
1	United States	311	38.3%
2	China	302	37.2%
3	Germany	84	10.4%
4	Netherlands	26	3.2%
5	France	21	2.6%
6	Canada	13	1.6%
7	Japan	10	1.2%
8	Australia	5	0.6%
9	Singapore	5	0.6%
10	Cyprus	4	0.5%
11	Portugal	4	0.5%
12	Norway	3	0.4%
13	Spain	3	0.4%
14	Switzerland	2	0.2%
15	Ukraine	2	0.2%
16	Poland	2	0.2%
17	Serbia	2	0.2%
18	Korea, Republic of	2	0.2%
19	Mongolia	2	0.2%
20	Ireland	2	0.2%
21	Belgium	2	0.2%
22	Argentina	1	0.1%
23	Malaysia	1	0.1%
24	Philippines	1	0.1%
25	South Africa	1	0.1%