Rank	Countries/Territories	Count	Percent
1	United States	358	39.2%
2	China	268	29.4%
3	Germany	63	6.9%
4	Singapore	24	2.6%
5	Netherlands	21	2.3%
6	Bulgaria	19	2.1%
7	Japan	18	2%
8	United Kingdom	12	1.3%
9	Canada	11	1.2%
10	Nigeria	11	1.2%
11	Philippines	10	1.1%
12	Korea, Republic of	8	0.9%
13	Cyprus	7	0.8%
14	France	7	0.8%
15	Russia	7	0.8%
16	Mauritius	6	0.7%
17	Ukraine	6	0.7%
18	Viet Nam	5	0.5%
19	Argentina	5	0.5%
20	Hong Kong	5	0.5%
21	Iran, Islamic Republic of	5	0.5%
22	Latvia	4	0.4%
23	Lithuania	4	0.4%
24	Benin	3	0.3%
25	Portugal	3	0.3%
26	South Africa	3	0.3%
27	Sweden	2	0.2%
28	Romania	2	0.2%
29	Morocco	2	0.2%
30	Pakistan	2	0.2%
31	Israel	2	0.2%
32	Turkey	2	0.2%
33	Greece	1	0.1%
34	Malaysia	1	0.1%
35	Bolivia, Plurinational State of	1	0.1%
36	Australia	1	0.1%
37	Palestine, State of	1	0.1%
38	Mongolia	1	0.1%
39	Poland	1	0.1%
40	Thailand	1	0.1%