Rank	Countries/Territories	Count	Percent
1	United States	544	41.6%
2	China	329	25.1%
3	Germany	119	9.1%
4	India	58	4.4%
5		50	3.8%
6	Japan	49	3.7%
7	Korea, Republic of	17	1.3%
8	Canada	14	1.1%
9	United Kingdom	13	1%
10	Netherlands	11	0.8%
11	Singapore	9	0.7%
12	Denmark	9	0.7%
13	Brazil	8	0.6%
14	Taiwan	8	0.6%
15	Australia	7	0.5%
16	Hong Kong	7	0.5%
17	Senegal	6	0.5%
18	Switzerland	5	0.4%
19	Tanzania, United Republic of	4	0.3%
20	Ireland	4	0.3%
21	Colombia	4	0.3%
22	Cyprus	4	0.3%
23	Ukraine	4	0.3%
24	Kenya	3	0.2%
25	Romania	3	0.2%
26	Mexico	3	0.2%
27	Morocco	2	0.2%
28	Turkey	2	0.2%
29	Ecuador	2	0.2%
30	France	2	0.2%
31	Indonesia	1	0.1%
32	Belgium	1	0.1%
33	Argentina	1	0.1%
34	Trinidad and Tobago	1	0.1%
35	Sweden	1	0.1%
36	Malaysia	1	0.1%
37	Russia	1	0.1%
38	Norway	1	0.1%
39	Viet Nam	1	0.1%