Rank	Countries/Territories	Count	Percent
1	United States	599	58.9%
2	China	159	15.6%
3	Germany	77	7.6%
4	Russia	20	2%
5	India	15	1.5%
6	Australia	15	1.5%
7	Japan	14	1.4%
8	Italy	13	1.3%
9	Korea, Republic of	12	1.2%
10	United Kingdom	10	1%
11	Netherlands	9	0.9%
12	Senegal	8	0.8%
13	Hong Kong	7	0.7%
14	France	6	0.6%
15	Canada	6	0.6%
16	Singapore	6	0.6%
17	Turkey	6	0.6%
18	Iran, Islamic Republic of	5	0.5%
19	Mexico	4	0.4%
20	Argentina	3	0.3%
21	Denmark	2	0.2%
22	Egypt	2	0.2%
23	Israel	2	0.2%
24	Mongolia	2	0.2%
25	Romania	2	0.2%
26	Taiwan	2	0.2%
27	Tunisia	1	0.1%
28	Ukraine	1	0.1%
29	New Zealand	1	0.1%
30	Portugal	1	0.1%
31	Spain	1	0.1%
32	Switzerland	1	0.1%
33	Latvia	1	0.1%
34	Ireland	1	0.1%
35	Cyprus	1	0.1%
36	Austria	1	0.1%
37	Barbados	1	0.1%