Rank	Countries/Territories	Count	Percent
1	United States	435	36.4%
2	China	380	31.8%
3	Germany	75	6.3%
4	Japan	50	4.2%
5	India	37	3.1%
6	Netherlands	27	2.3%
7	Switzerland	23	1.9%
8	France	20	1.7%
9	Canada	12	1%
10	Sweden	11	0.9%
11	Indonesia	10	0.8%
12	South Africa	9	0.8%
13	Iran, Islamic Republic of	8	0.7%
14	Nigeria	8	0.7%
15	Thailand	7	0.6%
16	Ireland	5	0.4%
17	Australia	5	0.4%
18	Greece	5	0.4%
19	Hungary	5	0.4%
20	Cyprus	5	0.4%
21	Brazil	4	0.3%
22	Romania	4	0.3%
23	Korea, Republic of	4	0.3%
24	United Kingdom	4	0.3%
25	Venezuela, Bolivarian Republic of	4	0.3%
26	Viet Nam	3	0.3%
27	Singapore	3	0.3%
28	Taiwan	3	0.3%
29	Iraq	3	0.3%
30	Colombia	3	0.3%
31	Egypt	2	0.2%
32	Bulgaria	2	0.2%
33	Cameroon	2	0.2%
34	Bangladesh	2	0.2%
35	Argentina	2	0.2%
36	Malaysia	2	0.2%
37	Pakistan	2	0.2%
38	Moldova, Republic of	2	0.2%
39	Mongolia	1	0.1%
40	Russia	1	0.1%
41	Mali	1	0.1%
42	Albania	1	0.1%
43	Belgium	1	0.1%
44	Burkina Faso	1	0.1%
45	Ethiopia	1	0.1%
46	Ghana	1	0.1%