Rank	Countries/Territories	Count	Percent
1	United States	319	37%
2	China	276	32%
3	Germany	99	11.5%
4	Australia	22	2.5%
5	Netherlands	16	1.9%
6	France	14	1.6%
7	India	13	1.5%
8	Japan	11	1.3%
9	Singapore	11	1.3%
10	Bulgaria	10	1.2%
11	Canada	9	1%
12	Portugal	9	1%
13	Ireland	5	0.6%
14	Ukraine	5	0.6%
15	United Kingdom	5	0.6%
16	Argentina	5	0.6%
17	Norway	5	0.6%
18	Philippines	4	0.5%
19	Cyprus	4	0.5%
20	Ethiopia	2	0.2%
21	Thailand	2	0.2%
22	Russia	2	0.2%
23	Korea, Republic of	2	0.2%
24	Mongolia	2	0.2%
25	Spain	2	0.2%
26	Sweden	2	0.2%
27	Switzerland	1	0.1%
28	South Africa	1	0.1%
29	Austria	1	0.1%
30	Brazil	1	0.1%
31	Poland	1	0.1%
32	Iran, Islamic Republic of	1	0.1%
33	Hong Kong	1	0.1%