Rank	Countries/Territories	Count	Percent
1	United States	294	43.4%
2	China	183	27%
3	Germany	70	10.3%
4	Canada	20	3%
5	Japan	19	2.8%
6	United Kingdom	14	2.1%
7	France	12	1.8%
8	Hong Kong	12	1.8%
9	Singapore	11	1.6%
10	Poland	6	0.9%
11	Netherlands	5	0.7%
12	Australia	5	0.7%
13	Cyprus	4	0.6%
14	Switzerland	4	0.6%
15	Russia	3	0.4%
16	Iran, Islamic Republic of	3	0.4%
17	Ireland	3	0.4%
18	Belgium	2	0.3%
19	Romania	2	0.3%
20	Spain	2	0.3%
21	Taiwan	1	0.1%
22	Malaysia	1	0.1%
23	Austria	1	0.1%