Rank	Countries/Territories	Count	Percent
1	United States	337	41.8%
2	China	125	15.5%
3	Germany	51	6.3%
4	Ireland	45	5.6%
5	Russia	32	4%
6	Korea, Republic of	25	3.1%
7	Italy	20	2.5%
8	France	19	2.4%
9	Canada	18	2.2%
10	Malaysia	18	2.2%
11	India	15	1.9%
12	Australia	14	1.7%
13	Japan	12	1.5%
14	Singapore	9	1.1%
15	Austria	8	1%
16	Switzerland	7	0.9%
17	Netherlands	6	0.7%
18	Slovakia	5	0.6%
19	Iran, Islamic Republic of	4	0.5%
20	Denmark	4	0.5%
21	Cyprus	3	0.4%
22	Portugal	3	0.4%
23	Israel	3	0.4%
24	Thailand	3	0.4%
25	United Kingdom	3	0.4%
26	Panama	2	0.2%
27	Czech Republic	2	0.2%
28	Costa Rica	2	0.2%
29	Argentina	2	0.2%
30	Brazil	2	0.2%
31	Belgium	1	0.1%
32	Hong Kong	1	0.1%
33	Indonesia	1	0.1%
34	Taiwan	1	0.1%
35	Spain	1	0.1%
36	Norway	1	0.1%
37	Pakistan	1	0.1%
38	Mongolia	1	0.1%