Rank	Countries/Territories	Count	Percent
1	United States	149	38.3%
2	China	87	22.4%
3	Germany	45	11.6%
4	Japan	18	4.6%
5	Russia	18	4.6%
6	India	14	3.6%
7	Canada	10	2.6%
8	Singapore	9	2.3%
9	Netherlands	6	1.5%
10	Korea, Republic of	5	1.3%
11	Cyprus	4	1%
12	Portugal	4	1%
13	Iran, Islamic Republic of	3	0.8%
14	Ireland	2	0.5%
15	Italy	2	0.5%
16	France	2	0.5%
17	Australia	2	0.5%
18	Luxembourg	2	0.5%
19	Norway	2	0.5%
20	Taiwan	2	0.5%
21	Ukraine	1	0.3%
22	Switzerland	1	0.3%
23	Greece	1	0.3%