Rank	Countries/Territories	Count	Percent
1	United States	506	42.6%
2	China	334	28.1%
3	Germany	139	11.7%
4	Latvia	45	3.8%
5	France	28	2.4%
6	Japan	23	1.9%
7	Norway	13	1.1%
8	Spain	13	1.1%
9	Canada	12	1%
10	India	10	0.8%
11	Hong Kong	7	0.6%
12	Netherlands	7	0.6%
13	Turkey	6	0.5%
14	Poland	6	0.5%
15	Korea, Republic of	4	0.3%
16	United Kingdom	4	0.3%
17	Cyprus	4	0.3%
18	Argentina	4	0.3%
19	Ireland	3	0.3%
20	Ukraine	3	0.3%
21	Luxembourg	2	0.2%
22	Russia	2	0.2%
23	Taiwan	2	0.2%
24	Kenya	2	0.2%
25	Iran, Islamic Republic of	2	0.2%
26	Australia	2	0.2%
27	Egypt	2	0.2%
28	Bangladesh	1	0.1%
29	Bulgaria	1	0.1%
30	Italy	1	0.1%
31	Lithuania	1	0.1%