Rank	Countries/Territories	Count	Percent
1	United States	454	38%
2	China	353	29.5%
3	Germany	66	5.5%
4	India	44	3.7%
5	Bulgaria	39	3.3%
6	Japan	23	1.9%
7	Canada	21	1.8%
8	France	20	1.7%
9	Russia	16	1.3%
10	Netherlands	13	1.1%
11	Korea, Republic of	12	1%
12	Iran, Islamic Republic of	11	0.9%
13	Taiwan	10	0.8%
14	Singapore	9	0.8%
15	Sweden	9	0.8%
16	United Kingdom	8	0.7%
17	Australia	8	0.7%
18	Argentina	6	0.5%
19	Denmark	6	0.5%
20	Hong Kong	6	0.5%
21	Italy	5	0.4%
22	Greece	4	0.3%
23	Belgium	4	0.3%
24	Thailand	4	0.3%
25	Turkey	4	0.3%
26	Poland	4	0.3%
27	Romania	3	0.3%
28	Brazil	3	0.3%
29	Cyprus	3	0.3%
30	Egypt	3	0.3%
31	Nigeria	3	0.3%
32	Iraq	3	0.3%
33	Peru	2	0.2%
34	Israel	2	0.2%
35	New Zealand	2	0.2%
36	South Africa	2	0.2%
37	Spain	1	0.1%
38	Saudi Arabia	1	0.1%
39	Philippines	1	0.1%
40	Pakistan	1	0.1%
41	Ireland	1	0.1%
42	Malaysia	1	0.1%
43	Mexico	1	0.1%
44	Finland	1	0.1%
45	Hungary	1	0.1%
46	Czech Republic	1	0.1%
47	Bangladesh	1	0.1%