Rank	Countries/Territories	Count	Percent
1	United States	286	31.3%
2	China	209	22.9%
3	Germany	84	9.2%
4	Spain	58	6.3%
5	United Kingdom	21	2.3%
6	Korea, Republic of	19	2.1%
7	Japan	17	1.9%
8	India	17	1.9%
9	Australia	16	1.8%
10	Taiwan	16	1.8%
11	Iran, Islamic Republic of	15	1.6%
12	Netherlands	14	1.5%
13	Brazil	13	1.4%
14	Greece	11	1.2%
15	France	11	1.2%
16	Russia	11	1.2%
17	Ireland	10	1.1%
18	Norway	7	0.8%
19	Hong Kong	7	0.8%
20	Canada	7	0.8%
21	Argentina	6	0.7%
22	Belgium	6	0.7%
23	Pakistan	6	0.7%
24	Ukraine	6	0.7%
25	Singapore	4	0.4%
26	Italy	3	0.3%
27	Finland	3	0.3%
28	Turkey	3	0.3%
29	Sri Lanka	3	0.3%
30	Sweden	2	0.2%
31	Thailand	2	0.2%
32	Egypt	2	0.2%
33	Cyprus	2	0.2%
34	Slovenia	2	0.2%
35	Morocco	2	0.2%
36	Romania	2	0.2%
37	Nigeria	2	0.2%
38	Poland	1	0.1%
39	Indonesia	1	0.1%
40	Kenya	1	0.1%
41	Malaysia	1	0.1%
42	Mexico	1	0.1%
43	Denmark	1	0.1%
44	Bangladesh	1	0.1%
45	Georgia	1	0.1%
46	Ghana	1	0.1%