Rank	Countries/Territories	Count	Percent
1	United States	432	33.2%
2	China	355	27.3%
3	Germany	112	8.6%
4	India	66	5.1%
5	Russia	48	3.7%
6	Netherlands	37	2.8%
7	France	31	2.4%
8		29	2.2%
9	Canada	21	1.6%
10	Singapore	18	1.4%
11	Indonesia	17	1.3%
12	Japan	15	1.2%
13	United Kingdom	14	1.1%
14	Sweden	10	0.8%
15	Korea, Republic of	9	0.7%
16	Denmark	9	0.7%
17	Australia	9	0.7%
18	Italy	8	0.6%
19	Ireland	7	0.5%
20	Cyprus	6	0.5%
21	Niger	5	0.4%
22	Thailand	5	0.4%
23	Cameroon	4	0.3%
24	Iran, Islamic Republic of	4	0.3%
25	Viet Nam	4	0.3%
26	Israel	3	0.2%
27	Czech Republic	3	0.2%
28	Taiwan	3	0.2%
29	Turkey	2	0.2%
30	Libya	2	0.2%
31	Slovakia	2	0.2%
32	Spain	2	0.2%
33	Sri Lanka	2	0.2%
34	Hong Kong	2	0.2%
35	Argentina	1	0.1%
36	Malaysia	1	0.1%
37	Mauritius	1	0.1%
38	Ukraine	1	0.1%
39	Switzerland	1	0.1%