Rank	Countries/Territories	Count	Percent
1	United States	559	38.9%
2	China	393	27.3%
3	Germany	158	11%
4	Japan	80	5.6%
5	France	58	4%
6		38	2.6%
7	Canada	30	2.1%
8	Korea, Republic of	22	1.5%
9	Iran, Islamic Republic of	19	1.3%
10	Singapore	17	1.2%
11	India	13	0.9%
12	Netherlands	11	0.8%
13	United Kingdom	6	0.4%
14	Latvia	4	0.3%
15	Australia	4	0.3%
16	Argentina	3	0.2%
17	Cyprus	3	0.2%
18	Hong Kong	3	0.2%
19	Malaysia	2	0.1%
20	Ecuador	2	0.1%
21	Qatar	2	0.1%
22	Romania	2	0.1%
23	South Africa	2	0.1%
24	Switzerland	2	0.1%
25	Thailand	2	0.1%
26	Russia	1	0.1%
27	Bangladesh	1	0.1%
28	Ireland	1	0.1%