Rank	Countries/Territories	Count	Percent
1	United States	486	51.5%
2	China	176	18.6%
3	Germany	132	14%
4	France	25	2.6%
5	Netherlands	17	1.8%
6	Singapore	15	1.6%
7	Switzerland	13	1.4%
8	Ukraine	13	1.4%
9	Japan	11	1.2%
10	Cyprus	7	0.7%
11	Canada	7	0.7%
12	Ireland	4	0.4%
13	Philippines	4	0.4%
14	United Kingdom	4	0.4%
15	Poland	3	0.3%
16	Russia	3	0.3%
17	Lithuania	3	0.3%
18	Malaysia	2	0.2%
19	India	2	0.2%
20	Iran, Islamic Republic of	2	0.2%
21	Chile	2	0.2%
22	Australia	2	0.2%
23	Cameroon	1	0.1%
24	Egypt	1	0.1%
25	Georgia	1	0.1%
26	Argentina	1	0.1%
27	Mexico	1	0.1%
28	Mongolia	1	0.1%
29	Korea, Republic of	1	0.1%
30	Sweden	1	0.1%
31	Taiwan	1	0.1%
32	Turkey	1	0.1%
33	Viet Nam	1	0.1%