Rank	Countries/Territories	Count	Percent
1	United States	251	29.5%
2	China	123	14.5%
3	Germany	84	9.9%
4	India	61	7.2%
5	Canada	46	5.4%
6	Iran, Islamic Republic of	36	4.2%
7	Denmark	25	2.9%
8	Netherlands	24	2.8%
9	United Kingdom	23	2.7%
10	France	20	2.4%
11	Japan	18	2.1%
12	Australia	16	1.9%
13	Taiwan	11	1.3%
14	Sweden	10	1.2%
15	Norway	10	1.2%
16	Russia	9	1.1%
17	Italy	9	1.1%
18	Poland	7	0.8%
19	Bangladesh	6	0.7%
20	Hong Kong	5	0.6%
21	Lebanon	5	0.6%
22	Nigeria	4	0.5%
23	Israel	4	0.5%
24	Brazil	4	0.5%
25	Cyprus	4	0.5%
26	Romania	4	0.5%
27	Turkey	4	0.5%
28	Singapore	3	0.4%
29	Portugal	2	0.2%
30	Malaysia	2	0.2%
31	New Zealand	2	0.2%
32	Jordan	2	0.2%
33	Korea, Republic of	2	0.2%
34	Finland	2	0.2%
35	Ireland	2	0.2%
36	Spain	2	0.2%
37	Switzerland	2	0.2%
38	Gambia	1	0.1%
39	Ecuador	1	0.1%
40	Egypt	1	0.1%
41	Latvia	1	0.1%
42	Lithuania	1	0.1%
43	Philippines	1	0.1%
44	South Africa	1	0.1%