Rank	Countries/Territories	Count	Percent
1	United States	742	68.1%
2	China	191	17.5%
3	Korea, Republic of	26	2.4%
4	Germany	25	2.3%
5	Japan	23	2.1%
6	Netherlands	13	1.2%
7	Bulgaria	12	1.1%
8	India	7	0.6%
9	Canada	6	0.6%
10	Brazil	6	0.6%
11	Singapore	5	0.5%
12	United Kingdom	4	0.4%
13	Turkey	3	0.3%
14	Bangladesh	3	0.3%
15	France	3	0.3%
16	Ireland	3	0.3%
17	Latvia	2	0.2%
18	Iran, Islamic Republic of	2	0.2%
19	Hong Kong	2	0.2%
20	Argentina	2	0.2%
21	Australia	2	0.2%
22	Mongolia	2	0.2%
23	Taiwan	2	0.2%
24	Thailand	1	0.1%
25	South Africa	1	0.1%
26	Norway	1	0.1%
27	Malaysia	1	0.1%