Rank	Countries/Territories	Count	Percent
1	United States	162	40.5%
2	China	84	21%
3	Germany	72	18%
4	Netherlands	10	2.5%
5	Ukraine	10	2.5%
6	Japan	9	2.2%
7	Serbia	7	1.8%
8	Singapore	7	1.8%
9	Turkey	6	1.5%
10	Norway	5	1.2%
11	India	4	1%
12	Iran, Islamic Republic of	4	1%
13	Cyprus	4	1%
14	United Kingdom	3	0.8%
15	Hungary	2	0.5%
16	Ireland	2	0.5%
17	Malaysia	2	0.5%
18	Switzerland	2	0.5%
19	Spain	2	0.5%
20	Sweden	1	0.2%
21	Bosnia and Herzegovina	1	0.2%
22	Mongolia	1	0.2%