Rank	Countries/Territories	Count	Percent
1	United States	409	37.6%
2	China	367	33.7%
3	Germany	156	14.3%
4		38	3.5%
5	France	21	1.9%
6	Japan	16	1.5%
7	Singapore	10	0.9%
8	Spain	9	0.8%
9	United Kingdom	7	0.6%
10	Ireland	7	0.6%
11	Iran, Islamic Republic of	6	0.6%
12	Australia	5	0.5%
13	Canada	5	0.5%
14	Netherlands	5	0.5%
15	Viet Nam	4	0.4%
16	Latvia	4	0.4%
17	India	3	0.3%
18	Cyprus	3	0.3%
19	Egypt	2	0.2%
20	Bulgaria	2	0.2%
21	Poland	2	0.2%
22	Russia	1	0.1%
23	Serbia	1	0.1%
24	Norway	1	0.1%
25	Switzerland	1	0.1%
26	Malaysia	1	0.1%
27	Chile	1	0.1%
28	Bangladesh	1	0.1%
29	Brazil	1	0.1%