Rank	Countries/Territories	Count	Percent
1	United States	418	33.1%
2	China	416	33%
3	Japan	78	6.2%
4	Germany	67	5.3%
5	India	48	3.8%
6	Canada	25	2%
7	Netherlands	23	1.8%
8	France	18	1.4%
9	Norway	14	1.1%
10	Korea, Republic of	11	0.9%
11	Brazil	10	0.8%
12	United Kingdom	10	0.8%
13	Singapore	9	0.7%
14	Australia	9	0.7%
15	Ireland	9	0.7%
16	Romania	7	0.6%
17	Egypt	7	0.6%
18	Thailand	7	0.6%
19	Mexico	6	0.5%
20	Argentina	5	0.4%
21	Belgium	5	0.4%
22	Iran, Islamic Republic of	5	0.4%
23	Israel	4	0.3%
24	Latvia	4	0.3%
25	Cyprus	4	0.3%
26	Hong Kong	4	0.3%
27	Spain	4	0.3%
28	Italy	3	0.2%
29	Russia	3	0.2%
30	Pakistan	3	0.2%
31	Poland	3	0.2%
32	Puerto Rico	2	0.2%
33	Malaysia	2	0.2%
34	Mauritius	2	0.2%
35	Greece	2	0.2%
36	Ethiopia	2	0.2%
37	Viet Nam	2	0.2%
38	Sweden	1	0.1%
39	Syrian Arab Republic	1	0.1%
40	South Africa	1	0.1%
41	Turkey	1	0.1%
42	Ukraine	1	0.1%
43	Georgia	1	0.1%
44	Chile	1	0.1%
45	Bulgaria	1	0.1%
46	Serbia	1	0.1%
47	Luxembourg	1	0.1%