Rank	Countries/Territories	Count	Percent
1	United States	334	40.7%
2	China	260	31.7%
3	Germany	93	11.3%
4		21	2.6%
5	United Kingdom	15	1.8%
6	Japan	13	1.6%
7	Singapore	12	1.5%
8	France	10	1.2%
9	Netherlands	9	1.1%
10	Switzerland	6	0.7%
11	Cyprus	6	0.7%
12	Ireland	6	0.7%
13	Iran, Islamic Republic of	4	0.5%
14	Hong Kong	4	0.5%
15	Russia	4	0.5%
16	Poland	3	0.4%
17	Canada	3	0.4%
18	Bulgaria	2	0.2%
19	Argentina	2	0.2%
20	Hungary	2	0.2%
21	Macao	2	0.2%
22	Indonesia	2	0.2%
23	Mauritius	2	0.2%
24	Mongolia	1	0.1%
25	Ukraine	1	0.1%
26	Sweden	1	0.1%
27	Malaysia	1	0.1%
28	India	1	0.1%
29	Australia	1	0.1%