Rank	Countries/Territories	Count	Percent
1	United States	460	37.1%
2	China	358	28.9%
3	Germany	118	9.5%
4	France	53	4.3%
5	Netherlands	37	3%
6	Canada	31	2.5%
7	United Kingdom	24	1.9%
8	Russia	14	1.1%
9	Australia	14	1.1%
10	Ireland	14	1.1%
11	Japan	10	0.8%
12	India	10	0.8%
13	Mexico	9	0.7%
14	Bulgaria	7	0.6%
15	Cyprus	7	0.6%
16	Korea, Republic of	6	0.5%
17	Turkey	5	0.4%
18	Zambia	4	0.3%
19	Norway	4	0.3%
20	Czech Republic	4	0.3%
21	Ethiopia	4	0.3%
22	Ghana	4	0.3%
23	Brazil	3	0.2%
24		3	0.2%
25	Philippines	3	0.2%
26	Romania	3	0.2%
27	South Africa	3	0.2%
28	Singapore	2	0.2%
29	Ukraine	2	0.2%
30	Pakistan	2	0.2%
31	Hong Kong	2	0.2%
32	Israel	2	0.2%
33	Austria	2	0.2%
34	Bolivia, Plurinational State of	2	0.2%
35	Argentina	1	0.1%
36	Armenia	1	0.1%
37	Chile	1	0.1%
38	Greece	1	0.1%
39	Georgia	1	0.1%
40	Italy	1	0.1%
41	Jamaica	1	0.1%
42	Kuwait	1	0.1%
43	Latvia	1	0.1%
44	Lithuania	1	0.1%
45	Iran, Islamic Republic of	1	0.1%
46	Switzerland	1	0.1%
47	Thailand	1	0.1%