Rank	Countries/Territories	Count	Percent
1	United States	487	37.3%
2	China	367	28.1%
3	Germany	105	8%
4	Bulgaria	76	5.8%
5	Japan	41	3.1%
6	France	29	2.2%
7	Netherlands	27	2.1%
8	South Africa	27	2.1%
9	United Kingdom	15	1.1%
10	Iran, Islamic Republic of	13	1%
11	Australia	12	0.9%
12	Singapore	9	0.7%
13	Russia	7	0.5%
14	Switzerland	7	0.5%
15	Korea, Republic of	7	0.5%
16	Canada	7	0.5%
17	Mauritius	6	0.5%
18	Latvia	5	0.4%
19	Viet Nam	5	0.4%
20	Ukraine	5	0.4%
21	Philippines	4	0.3%
22	Bangladesh	4	0.3%
23	Belgium	4	0.3%
24	Bolivia, Plurinational State of	3	0.2%
25	Argentina	3	0.2%
26	Cyprus	3	0.2%
27	Finland	3	0.2%
28	Turkey	3	0.2%
29	Greece	2	0.2%
30	Brazil	2	0.2%
31	Austria	2	0.2%
32	Poland	2	0.2%
33	Taiwan	2	0.2%
34	Saudi Arabia	2	0.2%
35	Qatar	2	0.2%
36	Sweden	1	0.1%
37	Portugal	1	0.1%
38	Nigeria	1	0.1%
39	Norway	1	0.1%
40	Mongolia	1	0.1%
41	Hong Kong	1	0.1%
42	Italy	1	0.1%
43	Jamaica	1	0.1%