Rank	Countries/Territories	Count	Percent
1	United States	519	42.5%
2	China	364	29.8%
3	Germany	117	9.6%
4	France	45	3.7%
5	Norway	16	1.3%
6	Japan	15	1.2%
7	Serbia	15	1.2%
8	Canada	14	1.1%
9	Singapore	12	1%
10	Cyprus	11	0.9%
11	Netherlands	8	0.7%
12	Ireland	7	0.6%
13	India	6	0.5%
14	Russia	6	0.5%
15	Ukraine	6	0.5%
16	Thailand	5	0.4%
17	Mongolia	5	0.4%
18	Hong Kong	5	0.4%
19	Bangladesh	4	0.3%
20	Brazil	4	0.3%
21	Argentina	3	0.2%
22	Australia	3	0.2%
23	Indonesia	3	0.2%
24	Korea, Republic of	3	0.2%
25	Romania	3	0.2%
26	United Kingdom	3	0.2%
27	Saudi Arabia	2	0.2%
28	Taiwan	2	0.2%
29	Jordan	2	0.2%
30	Morocco	2	0.2%
31	Iran, Islamic Republic of	2	0.2%
32	Armenia	2	0.2%
33	Denmark	2	0.2%
34	Finland	2	0.2%
35	Poland	1	0.1%
36	Latvia	1	0.1%
37	Tanzania, United Republic of	1	0.1%
38	Sweden	1	0.1%