Rank	Countries/Territories	Count	Percent
1	United States	508	38.4%
2	China	468	35.4%
3	Germany	112	8.5%
4	France	42	3.2%
5		30	2.3%
6	Canada	30	2.3%
7	Netherlands	26	2%
8	Japan	16	1.2%
9	Russia	15	1.1%
10	Singapore	12	0.9%
11	Australia	9	0.7%
12	Norway	8	0.6%
13	Korea, Republic of	7	0.5%
14	Brazil	6	0.5%
15	Cyprus	4	0.3%
16	India	4	0.3%
17	United Kingdom	4	0.3%
18	Bulgaria	3	0.2%
19	Hong Kong	3	0.2%
20	Latvia	2	0.2%
21	Iran, Islamic Republic of	2	0.2%
22	Ireland	1	0.1%
23	Poland	1	0.1%
24	South Africa	1	0.1%
25	Sweden	1	0.1%
26	Switzerland	1	0.1%
27	Ukraine	1	0.1%
28	Lithuania	1	0.1%
29	Mongolia	1	0.1%
30	Georgia	1	0.1%
31	Cameroon	1	0.1%
32	Argentina	1	0.1%