Rank	Countries/Territories	Count	Percent
1	United States	441	51.7%
2	China	192	22.5%
3	Germany	97	11.4%
4	Japan	24	2.8%
5	France	18	2.1%
6	Singapore	13	1.5%
7	Netherlands	9	1.1%
8	Argentina	7	0.8%
9	Russia	7	0.8%
10	United Kingdom	7	0.8%
11	Canada	6	0.7%
12	Cyprus	5	0.6%
13	Australia	5	0.6%
14	Norway	3	0.4%
15	Switzerland	3	0.4%
16	Ukraine	2	0.2%
17	Pakistan	2	0.2%
18	Mongolia	2	0.2%
19	Iran, Islamic Republic of	2	0.2%
20	Ireland	2	0.2%
21	Bangladesh	2	0.2%
22	Bulgaria	2	0.2%
23	Finland	2	0.2%