Rank	Countries/Territories	Count	Percent
1	United States	459	49.7%
2	China	262	28.4%
3	Germany	81	8.8%
4	Poland	30	3.2%
5	Japan	9	1%
6	France	9	1%
7	Korea, Republic of	7	0.8%
8	Singapore	6	0.6%
9	South Africa	5	0.5%
10	India	5	0.5%
11	Canada	5	0.5%
12	Cyprus	5	0.5%
13	Australia	5	0.5%
14	Argentina	4	0.4%
15	United Kingdom	4	0.4%
16	Hong Kong	3	0.3%
17	Iraq	3	0.3%
18	Norway	3	0.3%
19	Netherlands	2	0.2%
20	Russia	2	0.2%
21	Taiwan	2	0.2%
22	Ukraine	2	0.2%
23	Brazil	2	0.2%
24	Czech Republic	2	0.2%
25	Bangladesh	1	0.1%
26	Iran, Islamic Republic of	1	0.1%
27	Ghana	1	0.1%
28	Malaysia	1	0.1%
29	Mongolia	1	0.1%
30	Spain	1	0.1%
31	Switzerland	1	0.1%