Rank	Countries/Territories	Count	Percent
1	United States	312	38.4%
2	China	138	17%
3	Germany	50	6.2%
4	Canada	41	5%
5	Japan	40	4.9%
6	India	33	4.1%
7	Netherlands	26	3.2%
8	Ireland	22	2.7%
9	Iran, Islamic Republic of	20	2.5%
10	Australia	19	2.3%
11	Korea, Republic of	17	2.1%
12	Malaysia	13	1.6%
13	Switzerland	10	1.2%
14	United Kingdom	10	1.2%
15	Singapore	10	1.2%
16	Taiwan	8	1%
17	Mexico	4	0.5%
18	Brazil	4	0.5%
19	Cyprus	3	0.4%
20	New Zealand	3	0.4%
21	Norway	2	0.2%
22	Peru	2	0.2%
23	Romania	2	0.2%
24	Russia	2	0.2%
25	Greece	2	0.2%
26	Italy	2	0.2%
27	Croatia	2	0.2%
28	Serbia	2	0.2%
29	Turkey	2	0.2%
30	Slovakia	1	0.1%
31	Colombia	1	0.1%
32	Argentina	1	0.1%
33	Armenia	1	0.1%
34	Hong Kong	1	0.1%
35	Czech Republic	1	0.1%
36	Egypt	1	0.1%
37	Senegal	1	0.1%
38	Thailand	1	0.1%
39	Tunisia	1	0.1%
40	Pakistan	1	0.1%