Rank	Countries/Territories	Count	Percent
1	United States	377	37.3%
2	China	293	29%
3	Germany	163	16.1%
4	France	54	5.3%
5	Japan	19	1.9%
6	Netherlands	15	1.5%
7	Singapore	10	1%
8	India	10	1%
9	Cyprus	9	0.9%
10	Korea, Republic of	8	0.8%
11	Greece	6	0.6%
12	Australia	6	0.6%
13	Canada	4	0.4%
14	Hong Kong	4	0.4%
15	Ukraine	4	0.4%
16	Tanzania, United Republic of	2	0.2%
17	Thailand	2	0.2%
18	Tunisia	2	0.2%
19	Spain	2	0.2%
20	Viet Nam	2	0.2%
21	Iran, Islamic Republic of	2	0.2%
22	Ireland	2	0.2%
23	Malaysia	2	0.2%
24	Mongolia	2	0.2%
25	Azerbaijan	2	0.2%
26	Czech Republic	2	0.2%
27	Egypt	2	0.2%
28	Ethiopia	2	0.2%
29	Argentina	1	0.1%
30	Kazakhstan	1	0.1%
31	Switzerland	1	0.1%
32	Norway	1	0.1%