Rank	Countries/Territories	Count	Percent
1	United States	449	34.9%
2	China	314	24.4%
3	Germany	106	8.2%
4	Spain	66	5.1%
5	United Kingdom	32	2.5%
6	India	23	1.8%
7	Korea, Republic of	22	1.7%
8	Australia	22	1.7%
9	Japan	18	1.4%
10	Netherlands	18	1.4%
11	France	17	1.3%
12	Taiwan	16	1.2%
13	Brazil	15	1.2%
14	Iran, Islamic Republic of	15	1.2%
15	Canada	12	0.9%
16	Russia	12	0.9%
17	Greece	11	0.9%
18	Ireland	11	0.9%
19	Ukraine	8	0.6%
20	Singapore	7	0.5%
21	Norway	7	0.5%
22	Hong Kong	7	0.5%
23	Argentina	7	0.5%
24	Belgium	6	0.5%
25	Pakistan	6	0.5%
26	Mexico	6	0.5%
27	Cyprus	4	0.3%
28	Sweden	4	0.3%
29	Turkey	4	0.3%
30	Sri Lanka	3	0.2%
31	Ecuador	3	0.2%
32	Egypt	3	0.2%
33	Finland	3	0.2%
34	New Zealand	3	0.2%
35	Nigeria	3	0.2%
36	Philippines	3	0.2%
37	Italy	3	0.2%
38	Malaysia	3	0.2%
39	Morocco	2	0.2%
40	Slovenia	2	0.2%
41	Romania	2	0.2%
42	Thailand	2	0.2%
43	Poland	1	0.1%
44	Kenya	1	0.1%
45	Indonesia	1	0.1%
46	Georgia	1	0.1%
47	Ghana	1	0.1%
48	Denmark	1	0.1%
49	Bangladesh	1	0.1%