Rank	Countries/Territories	Count	Percent
1	United States	427	31.2%
2	China	387	28.3%
3	Germany	117	8.5%
4	Japan	89	6.5%
5	Ukraine	47	3.4%
6	Singapore	30	2.2%
7	Argentina	30	2.2%
8	France	26	1.9%
9	Ireland	23	1.7%
10	Australia	22	1.6%
11	Senegal	19	1.4%
12	United Kingdom	17	1.2%
13	Russia	13	0.9%
14	Canada	12	0.9%
15	Cyprus	10	0.7%
16	Iran, Islamic Republic of	10	0.7%
17	Togo	9	0.7%
18	Netherlands	8	0.6%
19	Mali	8	0.6%
20	Burkina Faso	8	0.6%
21	Korea, Republic of	6	0.4%
22	Sweden	5	0.4%
23	Switzerland	5	0.4%
24	Ghana	5	0.4%
25	Mauritius	4	0.3%
26	Nigeria	3	0.2%
27	Hong Kong	3	0.2%
28	India	3	0.2%
29	Gabon	3	0.2%
30	Bahamas	3	0.2%
31	Brazil	2	0.1%
32	Congo	2	0.1%
33	Ethiopia	2	0.1%
34	Malaysia	2	0.1%
35	Mongolia	2	0.1%
36	Somalia	2	0.1%
37	Norway	1	0.1%
38	Peru	1	0.1%
39	Romania	1	0.1%
40	Bulgaria	1	0.1%
41	Turkey	1	0.1%