Rank	Countries/Territories	Count	Percent
1	United States	328	34.2%
2	China	205	21.4%
3	Bulgaria	92	9.6%
4	Germany	37	3.9%
5	Korea, Republic of	29	3%
6	United Kingdom	26	2.7%
7	France	19	2%
8	Japan	19	2%
9	Netherlands	18	1.9%
10	Australia	15	1.6%
11	Canada	15	1.6%
12	Singapore	14	1.5%
13	Czech Republic	12	1.3%
14	India	12	1.3%
15	Malaysia	11	1.1%
16	Indonesia	10	1%
17	Russia	9	0.9%
18	Spain	9	0.9%
19	Greece	8	0.8%
20	Hong Kong	8	0.8%
21	Brazil	8	0.8%
22	Bangladesh	7	0.7%
23	Cyprus	5	0.5%
24	Slovenia	4	0.4%
25	Israel	4	0.4%
26	Romania	3	0.3%
27	Norway	3	0.3%
28	Pakistan	3	0.3%
29	Viet Nam	3	0.3%
30	Sweden	2	0.2%
31	Switzerland	2	0.2%
32	Taiwan	2	0.2%
33	Poland	2	0.2%
34	Mexico	2	0.2%
35	Morocco	2	0.2%
36	Saudi Arabia	2	0.2%
37	Cambodia	2	0.2%
38	Egypt	2	0.2%
39	Iran, Islamic Republic of	1	0.1%
40	Hungary	1	0.1%
41	Iceland	1	0.1%
42	Portugal	1	0.1%
43	Turkey	1	0.1%