Rank	Countries/Territories	Count	Percent
1	United States	145	26.6%
2	China	144	26.4%
3	Germany	26	4.8%
4	Japan	24	4.4%
5	Ghana	23	4.2%
6	United Kingdom	16	2.9%
7	Ethiopia	15	2.7%
8	India	13	2.4%
9	Nigeria	12	2.2%
10	Netherlands	11	2%
11	New Zealand	9	1.6%
12	Iraq	7	1.3%
13	Ireland	7	1.3%
14	Indonesia	6	1.1%
15	Australia	6	1.1%
16	Romania	6	1.1%
17	Hong Kong	5	0.9%
18	Turkey	5	0.9%
19	Senegal	5	0.9%
20	Singapore	5	0.9%
21	France	4	0.7%
22	Belgium	3	0.5%
23	Egypt	3	0.5%
24	Cameroon	3	0.5%
25	Mauritius	3	0.5%
26	Korea, Republic of	3	0.5%
27	Uganda	3	0.5%
28	Tanzania, United Republic of	3	0.5%
29	Viet Nam	3	0.5%
30	United Arab Emirates	2	0.4%
31	Taiwan	2	0.4%
32	South Africa	2	0.4%
33	Pakistan	2	0.4%
34	Botswana	2	0.4%
35	Burkina Faso	2	0.4%
36	Iran, Islamic Republic of	2	0.4%
37	Israel	2	0.4%
38	Greece	1	0.2%
39	Canada	1	0.2%
40	Philippines	1	0.2%
41	Poland	1	0.2%
42	Spain	1	0.2%
43	Switzerland	1	0.2%
44	Malawi	1	0.2%
45	Malaysia	1	0.2%
46	Kenya	1	0.2%
47	Nepal	1	0.2%
48	Russia	1	0.2%
49	Saudi Arabia	1	0.2%