Rank	Countries/Territories	Count	Percent
1	United States	399	42.1%
2	China	223	23.5%
3	Germany	86	9.1%
4	Japan	24	2.5%
5	Korea, Republic of	21	2.2%
6	Russia	20	2.1%
7	India	20	2.1%
8	United Kingdom	19	2%
9	Australia	14	1.5%
10	Brazil	9	1%
11	France	8	0.8%
12	Canada	7	0.7%
13	Taiwan	7	0.7%
14	Turkey	7	0.7%
15	Netherlands	6	0.6%
16	Senegal	6	0.6%
17	Spain	6	0.6%
18	Singapore	5	0.5%
19	Italy	5	0.5%
20	Hong Kong	5	0.5%
21	Iran, Islamic Republic of	4	0.4%
22	Colombia	4	0.4%
23	Egypt	4	0.4%
24	Austria	4	0.4%
25	Belgium	4	0.4%
26	Norway	4	0.4%
27	Pakistan	3	0.3%
28	South Africa	3	0.3%
29	Argentina	3	0.3%
30	Chile	2	0.2%
31	Indonesia	2	0.2%
32	Poland	2	0.2%
33	Portugal	2	0.2%
34	Lithuania	1	0.1%
35	Luxembourg	1	0.1%
36	Mexico	1	0.1%
37	Mongolia	1	0.1%
38	Morocco	1	0.1%
39	New Zealand	1	0.1%
40	Hungary	1	0.1%
41	Ireland	1	0.1%
42	Bangladesh	1	0.1%