Rank	Countries/Territories	Count	Percent
1	United States	467	40.1%
2	China	346	29.7%
3	Germany	60	5.2%
4		37	3.2%
5	Japan	31	2.7%
6	Brazil	20	1.7%
7	India	18	1.5%
8	Korea, Republic of	18	1.5%
9	Russia	18	1.5%
10	Canada	16	1.4%
11	France	14	1.2%
12	Hong Kong	14	1.2%
13	Australia	11	0.9%
14	United Kingdom	9	0.8%
15	Sweden	7	0.6%
16	Switzerland	7	0.6%
17	Taiwan	7	0.6%
18	Ireland	7	0.6%
19	Iran, Islamic Republic of	5	0.4%
20	Spain	5	0.4%
21	Romania	4	0.3%
22	Italy	4	0.3%
23	Malaysia	4	0.3%
24	Mexico	4	0.3%
25	Turkey	4	0.3%
26	Singapore	4	0.3%
27	Poland	3	0.3%
28	Netherlands	3	0.3%
29	Argentina	3	0.3%
30	Mongolia	2	0.2%
31	Norway	2	0.2%
32	Ukraine	1	0.1%
33	New Zealand	1	0.1%
34	Cambodia	1	0.1%
35	Cyprus	1	0.1%
36	Czech Republic	1	0.1%
37	Denmark	1	0.1%
38	Egypt	1	0.1%
39	Ethiopia	1	0.1%
40	Greece	1	0.1%
41	Uzbekistan	1	0.1%