Rank	Countries/Territories	Count	Percent
1	United States	521	30.9%
2	China	298	17.7%
3	Japan	273	16.2%
4	India	98	5.8%
5	Germany	90	5.3%
6	Iran, Islamic Republic of	41	2.4%
7	Canada	40	2.4%
8	United Kingdom	35	2.1%
9	Singapore	30	1.8%
10	Korea, Republic of	28	1.7%
11	Netherlands	24	1.4%
12	Nigeria	20	1.2%
13	France	18	1.1%
14	Ireland	13	0.8%
15	Russia	13	0.8%
16	Taiwan	11	0.7%
17	Australia	9	0.5%
18	Egypt	8	0.5%
19	Spain	8	0.5%
20	Sweden	7	0.4%
21	United Arab Emirates	7	0.4%
22	Hong Kong	7	0.4%
23	Brazil	6	0.4%
24	Indonesia	6	0.4%
25	Italy	6	0.4%
26	Macao	6	0.4%
27	Turkey	6	0.4%
28	Norway	5	0.3%
29	Bulgaria	5	0.3%
30	Bangladesh	5	0.3%
31	Cyprus	4	0.2%
32	Romania	4	0.2%
33	Qatar	3	0.2%
34	Ukraine	3	0.2%
35		3	0.2%
36	Israel	3	0.2%
37	Portugal	2	0.1%
38	New Zealand	2	0.1%
39	Austria	2	0.1%
40	Colombia	2	0.1%
41	Luxembourg	2	0.1%
42	Switzerland	2	0.1%
43	South Africa	2	0.1%
44	Viet Nam	1	0.1%
45	Denmark	1	0.1%
46	Finland	1	0.1%
47	Belgium	1	0.1%
48	Malaysia	1	0.1%
49	Morocco	1	0.1%
50	Puerto Rico	1	0.1%
51	Pakistan	1	0.1%
52	Libya	1	0.1%