Rank	Countries/Territories	Count	Percent
1	United States	529	37.5%
2	China	461	32.7%
3	Germany	194	13.8%
4	Japan	62	4.4%
5	India	26	1.8%
6	France	17	1.2%
7	Norway	14	1%
8	Singapore	12	0.9%
9	Canada	12	0.9%
10	Australia	11	0.8%
11	Russia	10	0.7%
12	Ukraine	9	0.6%
13	Iran, Islamic Republic of	8	0.6%
14	Korea, Republic of	7	0.5%
15	Netherlands	5	0.4%
16	Cyprus	4	0.3%
17	Latvia	3	0.2%
18	Hong Kong	3	0.2%
19	United Kingdom	3	0.2%
20	Viet Nam	2	0.1%
21	Peru	2	0.1%
22	Sweden	2	0.1%
23	Thailand	2	0.1%
24	Ireland	2	0.1%
25	Argentina	2	0.1%
26	Chile	2	0.1%
27	Bangladesh	1	0.1%
28	Lithuania	1	0.1%
29	Tunisia	1	0.1%
30	Switzerland	1	0.1%
31	Poland	1	0.1%