Rank	Countries/Territories	Count	Percent
1	United States	457	44.4%
2	China	279	27.1%
3	Germany	115	11.2%
4	France	51	5%
5	Japan	17	1.7%
6	Korea, Republic of	16	1.6%
7	Switzerland	14	1.4%
8	Hungary	13	1.3%
9	Netherlands	11	1.1%
10	Canada	9	0.9%
11	Cyprus	6	0.6%
12	Iran, Islamic Republic of	6	0.6%
13	Ukraine	6	0.6%
14	Spain	4	0.4%
15	Taiwan	4	0.4%
16	Norway	2	0.2%
17	Malaysia	2	0.2%
18	Hong Kong	2	0.2%
19	Australia	2	0.2%
20	Austria	2	0.2%
21	Bangladesh	2	0.2%
22	Brazil	2	0.2%
23	Czech Republic	1	0.1%
24	Iceland	1	0.1%
25	India	1	0.1%
26	Lithuania	1	0.1%
27	Romania	1	0.1%
28	Russia	1	0.1%
29	Singapore	1	0.1%