Rank	Countries/Territories	Count	Percent
1	United States	320	43.2%
2	China	204	27.5%
3	Germany	104	14%
4	Canada	18	2.4%
5	Russia	11	1.5%
6	Singapore	8	1.1%
7	Netherlands	7	0.9%
8	Japan	7	0.9%
9	Iran, Islamic Republic of	6	0.8%
10	Cyprus	6	0.8%
11	France	5	0.7%
12	Turkey	4	0.5%
13	United Kingdom	4	0.5%
14	Israel	3	0.4%
15	Philippines	3	0.4%
16	India	3	0.4%
17	Korea, Republic of	3	0.4%
18	Lithuania	2	0.3%
19	Malaysia	2	0.3%
20	Ireland	2	0.3%
21	Hong Kong	2	0.3%
22	Poland	2	0.3%
23	Norway	2	0.3%
24	Taiwan	2	0.3%
25	Ukraine	2	0.3%
26	Spain	2	0.3%
27	Sri Lanka	1	0.1%
28	Switzerland	1	0.1%
29	New Zealand	1	0.1%
30	Serbia	1	0.1%
31	Egypt	1	0.1%
32	Argentina	1	0.1%
33	Colombia	1	0.1%