Rank	Countries/Territories	Count	Percent
1	United States	325	37.6%
2	China	310	35.9%
3	Germany	71	8.2%
4	Korea, Republic of	54	6.2%
5	Netherlands	19	2.2%
6	Canada	15	1.7%
7	France	14	1.6%
8	Japan	13	1.5%
9	Singapore	11	1.3%
10	Argentina	6	0.7%
11	Cyprus	4	0.5%
12	United Kingdom	4	0.5%
13	Ukraine	3	0.3%
14	Switzerland	2	0.2%
15	Finland	2	0.2%
16	Iran, Islamic Republic of	2	0.2%
17	Pakistan	2	0.2%
18	Russia	2	0.2%
19	Mongolia	2	0.2%
20	Malaysia	1	0.1%
21	South Africa	1	0.1%
22	Australia	1	0.1%