Rank	Countries/Territories	Count	Percent
1	United States	280	33.7%
2	China	247	29.7%
3	Germany	39	4.7%
4	Iran, Islamic Republic of	30	3.6%
5	United Kingdom	25	3%
6	Singapore	24	2.9%
7	Australia	17	2%
8	Switzerland	16	1.9%
9	Korea, Republic of	14	1.7%
10	Japan	13	1.6%
11	India	13	1.6%
12	France	13	1.6%
13	Canada	10	1.2%
14	Norway	9	1.1%
15	Malaysia	9	1.1%
16	Netherlands	7	0.8%
17	Ireland	7	0.8%
18	Cyprus	7	0.8%
19	Spain	6	0.7%
20	Egypt	5	0.6%
21	Brazil	4	0.5%
22	Belgium	3	0.4%
23	Denmark	3	0.4%
24	Philippines	3	0.4%
25	Poland	2	0.2%
26	Portugal	2	0.2%
27	Lebanon	2	0.2%
28	Saudi Arabia	2	0.2%
29	South Africa	2	0.2%
30	Colombia	2	0.2%
31	Cambodia	2	0.2%
32	Viet Nam	2	0.2%
33	Virgin Islands, British	1	0.1%
34	Croatia	1	0.1%
35	Ecuador	1	0.1%
36	Finland	1	0.1%
37	Italy	1	0.1%
38	Thailand	1	0.1%
39	Ukraine	1	0.1%
40	Pakistan	1	0.1%
41	Peru	1	0.1%
42	Romania	1	0.1%
43	Russia	1	0.1%