Rank	Countries/Territories	Count	Percent
1	United States	146	37.1%
2	Germany	64	16.2%
3	China	60	15.2%
4	Korea, Republic of	25	6.3%
5	India	20	5.1%
6	Ghana	14	3.6%
7	Netherlands	11	2.8%
8	Singapore	8	2%
9	Japan	5	1.3%
10	Saudi Arabia	5	1.3%
11	Egypt	4	1%
12	Canada	3	0.8%
13	Indonesia	2	0.5%
14	Israel	2	0.5%
15	Cyprus	2	0.5%
16	Albania	2	0.5%
17	Russia	2	0.5%
18	Philippines	2	0.5%
19	Namibia	2	0.5%
20	Zambia	2	0.5%
21	Spain	1	0.3%
22	Switzerland	1	0.3%
23	Ukraine	1	0.3%
24	United Kingdom	1	0.3%
25	Norway	1	0.3%
26	Romania	1	0.3%
27	Australia	1	0.3%
28	Hong Kong	1	0.3%
29	Hungary	1	0.3%
30	Italy	1	0.3%
31	Latvia	1	0.3%
32	Malaysia	1	0.3%
33	Ireland	1	0.3%