Rank	Countries/Territories	Count	Percent
1	United States	223	47%
2	China	97	20.5%
3	Germany	48	10.1%
4	Russia	13	2.7%
5	Canada	11	2.3%
6	Singapore	11	2.3%
7	Japan	9	1.9%
8	Korea, Republic of	9	1.9%
9	Netherlands	6	1.3%
10	Switzerland	6	1.3%
11	Cyprus	5	1.1%
12	Poland	4	0.8%
13	Iran, Islamic Republic of	4	0.8%
14	United Kingdom	4	0.8%
15	Ireland	3	0.6%
16	France	3	0.6%
17	Hong Kong	3	0.6%
18	India	2	0.4%
19	Australia	2	0.4%
20	Bangladesh	2	0.4%
21	Belgium	2	0.4%
22	Mexico	2	0.4%
23	Romania	2	0.4%
24	Saudi Arabia	2	0.4%
25	Austria	1	0.2%