Rank	Countries/Territories	Count	Percent
1	United States	539	39.3%
2	China	342	24.9%
3	Germany	73	5.3%
4	India	65	4.7%
5	Canada	42	3.1%
6	Singapore	39	2.8%
7	Netherlands	37	2.7%
8	Ireland	24	1.8%
9	Japan	20	1.5%
10	Australia	19	1.4%
11	France	18	1.3%
12	Indonesia	17	1.2%
13	Russia	13	0.9%
14	Sudan	11	0.8%
15	Korea, Republic of	10	0.7%
16	United Kingdom	10	0.7%
17	Taiwan	9	0.7%
18	Pakistan	8	0.6%
19	Viet Nam	8	0.6%
20	Ghana	5	0.4%
21	Iran, Islamic Republic of	4	0.3%
22	Israel	4	0.3%
23	Italy	4	0.3%
24	Cyprus	4	0.3%
25	Portugal	4	0.3%
26	Nepal	4	0.3%
27	Saudi Arabia	4	0.3%
28	Philippines	3	0.2%
29	Czech Republic	3	0.2%
30	Egypt	3	0.2%
31	Yemen	3	0.2%
32	Ukraine	2	0.1%
33	Romania	2	0.1%
34	Hong Kong	2	0.1%
35	Malaysia	2	0.1%
36	Mexico	2	0.1%
37	Sweden	2	0.1%
38	Switzerland	2	0.1%
39	Thailand	1	0.1%
40	Turkey	1	0.1%
41	Serbia	1	0.1%
42	South Africa	1	0.1%
43	Argentina	1	0.1%
44	Jordan	1	0.1%
45	Greece	1	0.1%
46	Zambia	1	0.1%