Rank	Countries/Territories	Count	Percent
1	United States	506	39.1%
2	China	494	38.1%
3	Germany	52	4%
4	Japan	37	2.9%
5	India	29	2.2%
6	Russia	22	1.7%
7	Singapore	22	1.7%
8	Netherlands	16	1.2%
9	Korea, Republic of	11	0.8%
10	Italy	9	0.7%
11	Iran, Islamic Republic of	8	0.6%
12	Bolivia, Plurinational State of	8	0.6%
13	Australia	7	0.5%
14	Canada	7	0.5%
15	Thailand	6	0.5%
16	United Kingdom	6	0.5%
17	Ireland	5	0.4%
18	Taiwan	5	0.4%
19	Hong Kong	4	0.3%
20	France	4	0.3%
21	Argentina	3	0.2%
22	Tanzania, United Republic of	3	0.2%
23	Ukraine	3	0.2%
24	Turkey	2	0.2%
25	Spain	2	0.2%
26	Sweden	2	0.2%
27	Slovakia	2	0.2%
28	Portugal	2	0.2%
29	Latvia	2	0.2%
30	Belgium	2	0.2%
31	Egypt	2	0.2%
32	Finland	1	0.1%
33	Bangladesh	1	0.1%
34	Brazil	1	0.1%
35	Cyprus	1	0.1%
36	Czech Republic	1	0.1%
37	Niger	1	0.1%
38	Norway	1	0.1%
39	Oman	1	0.1%
40	Pakistan	1	0.1%
41	Philippines	1	0.1%
42	Poland	1	0.1%
43	South Africa	1	0.1%