Rank	Countries/Territories	Count	Percent
1	United States	352	42.7%
2	China	218	26.4%
3	Germany	61	7.4%
4	Bulgaria	30	3.6%
5	India	27	3.3%
6	Japan	26	3.2%
7	United Kingdom	21	2.5%
8	Ireland	15	1.8%
9	Norway	13	1.6%
10	Netherlands	9	1.1%
11	Hong Kong	7	0.8%
12	Cyprus	7	0.8%
13	Australia	4	0.5%
14	Brazil	3	0.4%
15	Lithuania	3	0.4%
16	Russia	3	0.4%
17	Singapore	3	0.4%
18	Thailand	3	0.4%
19	Turkey	2	0.2%
20	Philippines	2	0.2%
21	Poland	2	0.2%
22	New Zealand	2	0.2%
23	Canada	2	0.2%
24	Korea, Republic of	1	0.1%
25	Iran, Islamic Republic of	1	0.1%
26	Albania	1	0.1%
27	Bangladesh	1	0.1%
28	France	1	0.1%
29	Georgia	1	0.1%
30	Malaysia	1	0.1%
31	Mongolia	1	0.1%
32	Switzerland	1	0.1%
33	Taiwan	1	0.1%