Rank	Countries/Territories	Count	Percent
1	United States	470	40.5%
2	China	439	37.8%
3	Germany	89	7.7%
4	Japan	33	2.8%
5	France	23	2%
6	Singapore	13	1.1%
7	Ghana	11	0.9%
8	Australia	10	0.9%
9	Ukraine	10	0.9%
10	Ireland	9	0.8%
11	Canada	7	0.6%
12	Romania	7	0.6%
13	Netherlands	7	0.6%
14	Mexico	5	0.4%
15	Norway	4	0.3%
16	India	3	0.3%
17	Cyprus	3	0.3%
18	Argentina	2	0.2%
19	Bangladesh	2	0.2%
20	Iran, Islamic Republic of	2	0.2%
21	Malaysia	2	0.2%
22	Philippines	2	0.2%
23	Thailand	2	0.2%
24	Turkey	1	0.1%
25	Sweden	1	0.1%
26	Switzerland	1	0.1%
27	Mongolia	1	0.1%
28	Hong Kong	1	0.1%