Rank	Countries/Territories	Count	Percent
1	United States	430	28.8%
2	China	276	18.5%
3	Japan	271	18.2%
4	India	87	5.8%
5	Germany	66	4.4%
6	Iran, Islamic Republic of	40	2.7%
7	Canada	37	2.5%
8	United Kingdom	35	2.3%
9	Singapore	30	2%
10	Korea, Republic of	26	1.7%
11	Netherlands	23	1.5%
12	Nigeria	17	1.1%
13	France	16	1.1%
14	Ireland	11	0.7%
15	Taiwan	11	0.7%
16	Australia	9	0.6%
17	Spain	8	0.5%
18	United Arab Emirates	7	0.5%
19	Hong Kong	7	0.5%
20	Brazil	6	0.4%
21	Indonesia	6	0.4%
22	Italy	6	0.4%
23	Macao	6	0.4%
24	Turkey	6	0.4%
25	Bulgaria	5	0.3%
26	Bangladesh	5	0.3%
27	Norway	4	0.3%
28	Sweden	4	0.3%
29	Ukraine	3	0.2%
30	Qatar	3	0.2%
31	Romania	3	0.2%
32	Israel	3	0.2%
33	Cyprus	3	0.2%
34	Austria	2	0.1%
35	Colombia	2	0.1%
36	Luxembourg	2	0.1%
37	New Zealand	2	0.1%
38	Russia	2	0.1%
39	Switzerland	2	0.1%
40	Viet Nam	1	0.1%
41	Malaysia	1	0.1%
42	Morocco	1	0.1%
43	Pakistan	1	0.1%
44	Portugal	1	0.1%
45	Puerto Rico	1	0.1%
46	Libya	1	0.1%
47	Belgium	1	0.1%
48	Denmark	1	0.1%
49	Egypt	1	0.1%
50	Finland	1	0.1%