Rank	Countries/Territories	Count	Percent
1	United States	508	42.2%
2	China	376	31.2%
3	Germany	144	12%
4	Japan	35	2.9%
5	India	29	2.4%
6	Russia	18	1.5%
7	Korea, Republic of	17	1.4%
8	Hong Kong	10	0.8%
9	Ireland	9	0.7%
10	Netherlands	7	0.6%
11	Latvia	5	0.4%
12	Cyprus	5	0.4%
13	Canada	5	0.4%
14	Romania	4	0.3%
15	France	3	0.2%
16	Singapore	3	0.2%
17	Argentina	3	0.2%
18	Australia	3	0.2%
19	Iran, Islamic Republic of	3	0.2%
20	Bulgaria	2	0.2%
21	Egypt	2	0.2%
22	Spain	2	0.2%
23	Viet Nam	2	0.2%
24	United Kingdom	2	0.2%
25	Ukraine	1	0.1%
26	Poland	1	0.1%
27	Italy	1	0.1%
28	Bangladesh	1	0.1%
29	Belarus	1	0.1%
30	Belgium	1	0.1%
31	Brazil	1	0.1%
32	Moldova, Republic of	1	0.1%