Rank	Countries/Territories	Count	Percent
1	United States	539	52.6%
2	China	161	15.7%
3	Germany	83	8.1%
4	Japan	35	3.4%
5	Canada	30	2.9%
6	Australia	21	2.1%
7	India	20	2%
8	Ireland	18	1.8%
9	Netherlands	15	1.5%
10	France	15	1.5%
11	United Kingdom	15	1.5%
12	Korea, Republic of	13	1.3%
13	Singapore	7	0.7%
14	Poland	5	0.5%
15	Sweden	4	0.4%
16	Norway	4	0.4%
17	Mauritius	3	0.3%
18	Switzerland	3	0.3%
19	Thailand	2	0.2%
20	Russia	2	0.2%
21	Morocco	2	0.2%
22	Bulgaria	2	0.2%
23	Iran, Islamic Republic of	2	0.2%
24	Hong Kong	2	0.2%
25	Cyprus	2	0.2%
26	Denmark	2	0.2%
27	Slovakia	2	0.2%
28	South Africa	2	0.2%
29	Italy	2	0.2%
30	Viet Nam	2	0.2%
31	Finland	1	0.1%
32	Austria	1	0.1%
33	Bangladesh	1	0.1%
34	Belgium	1	0.1%
35	Argentina	1	0.1%
36	Pakistan	1	0.1%
37	Philippines	1	0.1%
38	Israel	1	0.1%
39	Ukraine	1	0.1%