Rank	Countries/Territories	Count	Percent
1	United States	354	49.6%
2	China	150	21%
3	Germany	43	6%
4	Korea, Republic of	22	3.1%
5	Canada	17	2.4%
6	Australia	15	2.1%
7	Japan	12	1.7%
8	Russia	12	1.7%
9	France	10	1.4%
10	India	10	1.4%
11	Switzerland	8	1.1%
12	Iran, Islamic Republic of	6	0.8%
13	Belgium	6	0.8%
14	Cyprus	6	0.8%
15	Netherlands	5	0.7%
16	United Kingdom	5	0.7%
17	Spain	3	0.4%
18	Hong Kong	3	0.4%
19	Ireland	2	0.3%
20	Denmark	2	0.3%
21	Brazil	2	0.3%
22	Bulgaria	2	0.3%
23	Austria	2	0.3%
24	Thailand	2	0.3%
25	Serbia	2	0.3%
26	Singapore	2	0.3%
27	Slovenia	2	0.3%
28	Malaysia	2	0.3%
29	Moldova, Republic of	1	0.1%
30	Mongolia	1	0.1%
31	Turkey	1	0.1%
32	Ukraine	1	0.1%
33	Taiwan	1	0.1%
34	Argentina	1	0.1%
35	Italy	1	0.1%