Rank	Countries/Territories	Count	Percent
1	United States	277	35.8%
2	China	183	23.7%
3	Germany	58	7.5%
4	Singapore	58	7.5%
5	India	39	5%
6	Russia	29	3.8%
7	Japan	24	3.1%
8	Korea, Republic of	20	2.6%
9	France	14	1.8%
10	Ireland	10	1.3%
11	Romania	9	1.2%
12	Poland	7	0.9%
13	Senegal	6	0.8%
14	United Kingdom	5	0.6%
15	Netherlands	4	0.5%
16	Hong Kong	4	0.5%
17	Canada	3	0.4%
18	Brazil	2	0.3%
19	Bulgaria	2	0.3%
20	Cyprus	2	0.3%
21	Kazakhstan	2	0.3%
22	Norway	2	0.3%
23	Malaysia	2	0.3%
24	Portugal	2	0.3%
25	Moldova, Republic of	1	0.1%
26	Slovakia	1	0.1%
27	South Africa	1	0.1%
28	Taiwan	1	0.1%
29	Tunisia	1	0.1%
30	Italy	1	0.1%
31	Iran, Islamic Republic of	1	0.1%
32	Belgium	1	0.1%
33	Chile	1	0.1%