Rank	Countries/Territories	Count	Percent
1	United States	308	34.9%
2	China	298	33.7%
3	Germany	65	7.4%
4	Japan	24	2.7%
5	Netherlands	24	2.7%
6	Bulgaria	21	2.4%
7	Singapore	19	2.2%
8	Korea, Republic of	12	1.4%
9	Cyprus	9	1%
10	Russia	9	1%
11	Senegal	8	0.9%
12	Pakistan	8	0.9%
13	France	8	0.9%
14	Australia	8	0.9%
15		7	0.8%
16	Argentina	5	0.6%
17	Hong Kong	5	0.6%
18	Nigeria	5	0.6%
19	Turkey	5	0.6%
20	Romania	4	0.5%
21	Italy	3	0.3%
22	Latvia	3	0.3%
23	Malaysia	3	0.3%
24	Indonesia	2	0.2%
25	Bangladesh	2	0.2%
26	Canada	2	0.2%
27	Norway	2	0.2%
28	Jordan	2	0.2%
29	South Africa	2	0.2%
30	Switzerland	1	0.1%
31	Uganda	1	0.1%
32	Ukraine	1	0.1%
33	United Kingdom	1	0.1%
34	Philippines	1	0.1%
35	Portugal	1	0.1%
36	Brazil	1	0.1%
37	Ireland	1	0.1%
38	India	1	0.1%
39	Morocco	1	0.1%