Rank	Countries/Territories	Count	Percent
1	United States	641	50.1%
2	China	257	20.1%
3	Germany	136	10.6%
4	France	48	3.8%
5	Japan	26	2%
6	Netherlands	23	1.8%
7	United Kingdom	23	1.8%
8	Korea, Republic of	16	1.2%
9	Iran, Islamic Republic of	13	1%
10	Russia	12	0.9%
11	Ireland	10	0.8%
12	Thailand	10	0.8%
13	Singapore	8	0.6%
14	Australia	8	0.6%
15	Spain	7	0.5%
16	Taiwan	7	0.5%
17	Philippines	6	0.5%
18	Cyprus	5	0.4%
19	Canada	4	0.3%
20	Romania	3	0.2%
21	Pakistan	2	0.2%
22	Bangladesh	2	0.2%
23	Brunei Darussalam	2	0.2%
24	India	2	0.2%
25	Iraq	1	0.1%
26	Lithuania	1	0.1%
27	Malaysia	1	0.1%
28	Bulgaria	1	0.1%
29	Argentina	1	0.1%
30	Switzerland	1	0.1%
31	Poland	1	0.1%
32	Turkey	1	0.1%
33	Viet Nam	1	0.1%