Rank	Countries/Territories	Count	Percent
1	United States	311	31.4%
2	China	202	20.4%
3	Japan	125	12.6%
4	Germany	65	6.6%
5	India	27	2.7%
6	Singapore	24	2.4%
7	United Kingdom	24	2.4%
8	Iran, Islamic Republic of	19	1.9%
9	Canada	18	1.8%
10	Ireland	17	1.7%
11	Russia	16	1.6%
12	Egypt	16	1.6%
13	Netherlands	15	1.5%
14	Greece	14	1.4%
15	Lithuania	10	1%
16	Indonesia	8	0.8%
17	Viet Nam	7	0.7%
18	Korea, Republic of	6	0.6%
19	Guam	6	0.6%
20	Australia	5	0.5%
21	Kazakhstan	5	0.5%
22	Malaysia	4	0.4%
23	Italy	4	0.4%
24	Philippines	3	0.3%
25	France	3	0.3%
26	Cyprus	3	0.3%
27	Spain	3	0.3%
28	South Africa	2	0.2%
29	Thailand	2	0.2%
30	Turkey	2	0.2%
31	Denmark	2	0.2%
32	Austria	2	0.2%
33	Brazil	2	0.2%
34	Ghana	2	0.2%
35	Hungary	2	0.2%
36	Nigeria	2	0.2%
37	Pakistan	2	0.2%
38	Mexico	2	0.2%
39	Iraq	1	0.1%
40	Peru	1	0.1%
41	Poland	1	0.1%
42	Senegal	1	0.1%
43	Hong Kong	1	0.1%
44	Colombia	1	0.1%
45	Georgia	1	0.1%
46	Tanzania, United Republic of	1	0.1%