Rank	Countries/Territories	Count	Percent
1	United States	241	32.5%
2	China	173	23.3%
3	Germany	68	9.2%
4	Singapore	58	7.8%
5	India	32	4.3%
6	Russia	31	4.2%
7	Japan	26	3.5%
8	Korea, Republic of	17	2.3%
9	Ireland	12	1.6%
10	Taiwan	10	1.3%
11	Turkey	7	0.9%
12	Senegal	6	0.8%
13	Spain	5	0.7%
14	Hong Kong	4	0.5%
15	Cyprus	4	0.5%
16	France	4	0.5%
17	Australia	4	0.5%
18	Iran, Islamic Republic of	3	0.4%
19	Israel	3	0.4%
20	Netherlands	3	0.4%
21	Philippines	3	0.4%
22	Poland	3	0.4%
23	United Kingdom	3	0.4%
24	Portugal	2	0.3%
25	Mexico	2	0.3%
26	Indonesia	2	0.3%
27	Greece	2	0.3%
28	Brazil	2	0.3%
29	Canada	1	0.1%
30	Belgium	1	0.1%
31	Ghana	1	0.1%
32	Argentina	1	0.1%
33	Moldova, Republic of	1	0.1%
34	Malaysia	1	0.1%
35	New Zealand	1	0.1%
36	Norway	1	0.1%
37	Tunisia	1	0.1%
38	Serbia	1	0.1%
39	Saudi Arabia	1	0.1%