Rank	Countries/Territories	Count	Percent
1	United States	423	26.6%
2	China	380	23.9%
3	Germany	129	8.1%
4	Russia	76	4.8%
5	India	69	4.3%
6	Nigeria	40	2.5%
7	United Kingdom	37	2.3%
8	France	35	2.2%
9	Canada	34	2.1%
10	Yemen	22	1.4%
11	Taiwan	19	1.2%
12	Japan	19	1.2%
13	Cameroon	18	1.1%
14	Netherlands	16	1%
15	Turkey	15	0.9%
16	Spain	14	0.9%
17	Ethiopia	14	0.9%
18	Romania	12	0.8%
19	Switzerland	9	0.6%
20	Austria	9	0.6%
21	Ghana	9	0.6%
22	Cyprus	9	0.6%
23	Egypt	8	0.5%
24	Colombia	8	0.5%
25	Morocco	8	0.5%
26	Korea, Republic of	8	0.5%
27	Iran, Islamic Republic of	8	0.5%
28	Ireland	8	0.5%
29	Sweden	8	0.5%
30	Pakistan	8	0.5%
31	Singapore	7	0.4%
32	Georgia	7	0.4%
33	Indonesia	7	0.4%
34	Italy	6	0.4%
35	Libya	6	0.4%
36	Mauritius	6	0.4%
37	Mexico	6	0.4%
38	Malaysia	5	0.3%
39	New Zealand	5	0.3%
40	Greece	5	0.3%
41	Guinea	5	0.3%
42	Bangladesh	5	0.3%
43	Brazil	5	0.3%
44	Thailand	5	0.3%
45	Tanzania, United Republic of	4	0.3%
46	South Africa	4	0.3%
47	Portugal	4	0.3%
48	Australia	4	0.3%
49	Mongolia	3	0.2%
50	Viet Nam	3	0.2%
51	Zambia	2	0.1%
52	Togo	2	0.1%
53	Tunisia	2	0.1%
54	Algeria	2	0.1%
55	Estonia	2	0.1%
56	Congo	1	0.1%
57	Burundi	1	0.1%
58	Namibia	1	0.1%
59	Kazakhstan	1	0.1%
60	Somalia	1	0.1%
61	Panama	1	0.1%
62	Peru	1	0.1%
63	Ukraine	1	0.1%