Rank	Countries/Territories	Count	Percent
1	United States	441	47.3%
2	China	235	25.2%
3	Germany	104	11.2%
4	France	36	3.9%
5	Russia	30	3.2%
6	Japan	22	2.4%
7	Singapore	11	1.2%
8	Netherlands	7	0.8%
9	Australia	7	0.8%
10	Canada	6	0.6%
11	Ireland	4	0.4%
12	Spain	4	0.4%
13	Ukraine	3	0.3%
14	United Kingdom	3	0.3%
15	India	3	0.3%
16	Cyprus	3	0.3%
17	Bangladesh	2	0.2%
18	Iran, Islamic Republic of	2	0.2%
19	Israel	2	0.2%
20	Norway	2	0.2%
21	Malaysia	2	0.2%
22	Mongolia	1	0.1%
23	Hong Kong	1	0.1%
24	South Africa	1	0.1%