Rank	Countries/Territories	Count	Percent
1	United States	668	39.5%
2	China	608	36%
3	Germany	154	9.1%
4	France	54	3.2%
5	Japan	44	2.6%
6	Canada	18	1.1%
7	Singapore	18	1.1%
8	Norway	13	0.8%
9	United Kingdom	12	0.7%
10	Ireland	12	0.7%
11	Australia	10	0.6%
12	Netherlands	9	0.5%
13	Taiwan	8	0.5%
14	Argentina	7	0.4%
15	Latvia	7	0.4%
16	Cyprus	6	0.4%
17	Sweden	6	0.4%
18	Romania	6	0.4%
19	Korea, Republic of	5	0.3%
20	Iran, Islamic Republic of	4	0.2%
21	Hong Kong	4	0.2%
22	Russia	4	0.2%
23	India	3	0.2%
24	Iraq	3	0.2%
25	Chile	2	0.1%
26	Mauritius	2	0.1%
27	Poland	2	0.1%
28	Ukraine	1	0.1%
29	Malaysia	1	0.1%