Rank	Countries/Territories	Count	Percent
1	United States	339	41.5%
2	China	176	21.6%
3	Germany	82	10%
4	Japan	32	3.9%
5	France	22	2.7%
6	Ireland	21	2.6%
7	Korea, Republic of	20	2.5%
8	India	19	2.3%
9	Russia	18	2.2%
10	Hong Kong	13	1.6%
11	Italy	9	1.1%
12	Brazil	9	1.1%
13	Taiwan	7	0.9%
14	Netherlands	6	0.7%
15	Senegal	5	0.6%
16	Belgium	4	0.5%
17	Denmark	4	0.5%
18	Canada	3	0.4%
19	Cyprus	3	0.4%
20	Singapore	3	0.4%
21	Spain	3	0.4%
22	Switzerland	3	0.4%
23	Kazakhstan	2	0.2%
24	United Kingdom	2	0.2%
25	Romania	2	0.2%
26	Greece	2	0.2%
27	Iran, Islamic Republic of	1	0.1%
28	Israel	1	0.1%
29	Egypt	1	0.1%
30	Norway	1	0.1%
31	Philippines	1	0.1%
32	Lithuania	1	0.1%
33	Malaysia	1	0.1%