Rank	Countries/Territories	Count	Percent
1	United States	433	35.7%
2	China	428	35.3%
3	Germany	90	7.4%
4	France	53	4.4%
5	Argentina	36	3%
6	Australia	29	2.4%
7	Canada	23	1.9%
8	India	13	1.1%
9	Norway	11	0.9%
10	Netherlands	8	0.7%
11	Japan	8	0.7%
12	Korea, Republic of	8	0.7%
13	Cyprus	8	0.7%
14	Switzerland	7	0.6%
15	United Arab Emirates	6	0.5%
16	Singapore	5	0.4%
17	Pakistan	4	0.3%
18	United Kingdom	4	0.3%
19	Saudi Arabia	4	0.3%
20	Ireland	4	0.3%
21	Iran, Islamic Republic of	3	0.2%
22	Malaysia	3	0.2%
23	Finland	3	0.2%
24	Hong Kong	2	0.2%
25	Czech Republic	2	0.2%
26	Brazil	2	0.2%
27	Taiwan	2	0.2%
28	Ukraine	2	0.2%
29	South Africa	2	0.2%
30	Sri Lanka	2	0.2%
31	Mongolia	2	0.2%
32	Oman	2	0.2%
33	Palestine, State of	1	0.1%
34	Philippines	1	0.1%
35	Mauritius	1	0.1%
36	Libya	1	0.1%
37	Iraq	1	0.1%