Rank	Countries/Territories	Count	Percent
1	United States	534	42.5%
2	China	358	28.5%
3	Germany	101	8%
4	Netherlands	61	4.9%
5	Canada	48	3.8%
6	Japan	30	2.4%
7	France	18	1.4%
8	Ukraine	14	1.1%
9	Turkey	12	1%
10	Russia	12	1%
11	Switzerland	12	1%
12	Singapore	11	0.9%
13	Ireland	10	0.8%
14	India	7	0.6%
15	Iran, Islamic Republic of	6	0.5%
16	Cyprus	4	0.3%
17	Argentina	3	0.2%
18	Korea, Republic of	3	0.2%
19	Mongolia	2	0.2%
20	Hong Kong	2	0.2%
21	South Africa	2	0.2%
22	Taiwan	1	0.1%
23	Australia	1	0.1%
24	Bangladesh	1	0.1%
25	Romania	1	0.1%
26	Malaysia	1	0.1%