Rank	Countries/Territories	Count	Percent
1	China	315	29.8%
2	United States	291	27.5%
3	Germany	142	13.4%
4	Belgium	60	5.7%
5	Bulgaria	53	5%
6	Netherlands	29	2.7%
7	France	27	2.6%
8	India	22	2.1%
9	Taiwan	17	1.6%
10	Nigeria	15	1.4%
11	Canada	11	1%
12	Singapore	10	0.9%
13	Korea, Republic of	9	0.9%
14	Cyprus	6	0.6%
15	Bolivia, Plurinational State of	5	0.5%
16	Japan	5	0.5%
17	Mauritius	5	0.5%
18	Togo	5	0.5%
19	Spain	4	0.4%
20	Iran, Islamic Republic of	4	0.4%
21	Romania	3	0.3%
22	Thailand	2	0.2%
23	Luxembourg	2	0.2%
24	Philippines	2	0.2%
25	Poland	2	0.2%
26	Indonesia	2	0.2%
27	Australia	2	0.2%
28	Czech Republic	2	0.2%
29	Austria	1	0.1%
30	Georgia	1	0.1%
31	Ghana	1	0.1%
32	Myanmar	1	0.1%
33	Russia	1	0.1%