Rank	Countries/Territories	Count	Percent
1	United States	459	46.3%
2	China	189	19.1%
3	Germany	69	7%
4	France	33	3.3%
5	Netherlands	30	3%
6	Japan	27	2.7%
7	Bulgaria	25	2.5%
8	Tanzania, United Republic of	19	1.9%
9	Singapore	15	1.5%
10	Spain	14	1.4%
11	Canada	14	1.4%
12	Croatia	10	1%
13	Egypt	8	0.8%
14	Cyprus	7	0.7%
15	Mauritius	6	0.6%
16	Hong Kong	5	0.5%
17	India	5	0.5%
18	South Africa	5	0.5%
19	Turkey	5	0.5%
20	United Kingdom	4	0.4%
21	Latvia	4	0.4%
22	Philippines	4	0.4%
23	Iran, Islamic Republic of	3	0.3%
24	Korea, Republic of	3	0.3%
25	Switzerland	3	0.3%
26	Argentina	3	0.3%
27	Australia	3	0.3%
28	Ukraine	3	0.3%
29	Bangladesh	2	0.2%
30	Cote D'ivoire	2	0.2%
31	Sweden	2	0.2%
32	Qatar	2	0.2%
33	Morocco	2	0.2%
34	Portugal	1	0.1%
35	Taiwan	1	0.1%
36	Angola	1	0.1%
37	Ghana	1	0.1%
38	Belgium	1	0.1%
39	Brazil	1	0.1%
40	Colombia	1	0.1%