Rank	Countries/Territories	Count	Percent
1	United States	484	37.5%
2	China	425	32.9%
3	Germany	152	11.8%
4	Japan	34	2.6%
5	Latvia	31	2.4%
6		31	2.4%
7	India	20	1.5%
8	France	19	1.5%
9	Singapore	15	1.2%
10	Viet Nam	14	1.1%
11	Ireland	11	0.9%
12	Korea, Republic of	9	0.7%
13	Australia	9	0.7%
14	Netherlands	8	0.6%
15	Ukraine	7	0.5%
16	Cyprus	6	0.5%
17	Canada	4	0.3%
18	Iran, Islamic Republic of	3	0.2%
19	United Kingdom	3	0.2%
20	Norway	2	0.2%
21	Bangladesh	2	0.2%
22	Malaysia	1	0.1%
23	Mongolia	1	0.1%