Rank	Countries/Territories	Count	Percent
1	China	475	33.7%
2	United States	374	26.5%
3	Germany	170	12.1%
4	Belgium	60	4.3%
5	Bulgaria	54	3.8%
6	Nigeria	41	2.9%
7	Netherlands	34	2.4%
8	France	34	2.4%
9	India	27	1.9%
10	Taiwan	20	1.4%
11	Canada	17	1.2%
12	Singapore	10	0.7%
13	Japan	9	0.6%
14	Korea, Republic of	9	0.6%
15	Mauritius	7	0.5%
16	Cyprus	7	0.5%
17	Thailand	7	0.5%
18	Australia	6	0.4%
19	Latvia	6	0.4%
20	Bolivia, Plurinational State of	5	0.4%
21	Togo	5	0.4%
22	Iran, Islamic Republic of	4	0.3%
23	South Africa	4	0.3%
24	Spain	4	0.3%
25	Romania	3	0.2%
26	Philippines	2	0.1%
27	Poland	2	0.1%
28	Luxembourg	2	0.1%
29	Colombia	2	0.1%
30	Czech Republic	2	0.1%
31	Indonesia	2	0.1%
32	Ghana	1	0.1%
33	Georgia	1	0.1%
34	Austria	1	0.1%
35	Myanmar	1	0.1%
36	Russia	1	0.1%
37	Switzerland	1	0.1%