Rank	Countries/Territories	Count	Percent
1	United States	345	35.7%
2	China	270	27.9%
3	Germany	173	17.9%
4	France	23	2.4%
5	India	18	1.9%
6	Japan	18	1.9%
7	Korea, Republic of	14	1.4%
8	Singapore	11	1.1%
9	South Africa	9	0.9%
10	Cameroon	7	0.7%
11		7	0.7%
12	United Kingdom	7	0.7%
13	Australia	6	0.6%
14	Canada	5	0.5%
15	Belgium	5	0.5%
16	Cyprus	5	0.5%
17	Netherlands	5	0.5%
18	Nigeria	4	0.4%
19	Ghana	3	0.3%
20	Indonesia	3	0.3%
21	Israel	2	0.2%
22	Italy	2	0.2%
23	Egypt	2	0.2%
24	Congo	2	0.2%
25	Bangladesh	2	0.2%
26	Hong Kong	2	0.2%
27	Pakistan	2	0.2%
28	Sweden	2	0.2%
29	Switzerland	2	0.2%
30	Latvia	2	0.2%
31	Taiwan	1	0.1%
32	Tanzania, United Republic of	1	0.1%
33	Thailand	1	0.1%
34	Tunisia	1	0.1%
35	Ukraine	1	0.1%
36	Saudi Arabia	1	0.1%
37	Senegal	1	0.1%
38	Kenya	1	0.1%
39	Argentina	1	0.1%