Rank	Countries/Territories	Count	Percent
1	United States	328	41.2%
2	China	227	28.5%
3	Germany	89	11.2%
4	Japan	26	3.3%
5	Canada	23	2.9%
6	Singapore	18	2.3%
7	Netherlands	16	2%
8	Ukraine	16	2%
9	Norway	9	1.1%
10	Australia	8	1%
11	France	6	0.8%
12	Cyprus	5	0.6%
13	Brazil	4	0.5%
14	Argentina	4	0.5%
15	Malaysia	4	0.5%
16	South Africa	3	0.4%
17	Sweden	2	0.3%
18	Iran, Islamic Republic of	2	0.3%
19	Thailand	2	0.3%
20	Russia	1	0.1%
21	Switzerland	1	0.1%
22	Finland	1	0.1%
23	India	1	0.1%