Rank	Countries/Territories	Count	Percent
1	United States	284	28.5%
2	China	262	26.3%
3	Germany	113	11.4%
4	Netherlands	66	6.6%
5	Japan	59	5.9%
6	Bulgaria	37	3.7%
7	Iran, Islamic Republic of	19	1.9%
8	Singapore	17	1.7%
9	United Kingdom	12	1.2%
10	France	12	1.2%
11	Canada	10	1%
12	Nigeria	9	0.9%
13	Lithuania	9	0.9%
14	Russia	7	0.7%
15	Spain	7	0.7%
16	Switzerland	7	0.7%
17	Korea, Republic of	7	0.7%
18	Latvia	5	0.5%
19	Portugal	5	0.5%
20	Thailand	4	0.4%
21	Turkey	4	0.4%
22	South Africa	4	0.4%
23	India	4	0.4%
24	Cyprus	4	0.4%
25	Viet Nam	4	0.4%
26	Argentina	3	0.3%
27	Australia	3	0.3%
28	Bangladesh	3	0.3%
29	Hong Kong	3	0.3%
30	Ukraine	2	0.2%
31	Romania	2	0.2%
32	Morocco	2	0.2%
33	Pakistan	2	0.2%
34	Philippines	1	0.1%
35	Greece	1	0.1%
36	Belgium	1	0.1%
37	Chile	1	0.1%