Rank	Countries/Territories	Count	Percent
1	United States	449	38.3%
2	China	358	30.5%
3	Germany	112	9.6%
4	Canada	43	3.7%
5	Japan	27	2.3%
6	Singapore	25	2.1%
7	Australia	22	1.9%
8	Switzerland	19	1.6%
9	Finland	11	0.9%
10	India	10	0.9%
11	Korea, Republic of	9	0.8%
12	Taiwan	9	0.8%
13	Cyprus	8	0.7%
14	Netherlands	7	0.6%
15	Ukraine	7	0.6%
16	United Kingdom	7	0.6%
17	Iran, Islamic Republic of	5	0.4%
18	Russia	5	0.4%
19	France	5	0.4%
20	Hong Kong	5	0.4%
21	Latvia	3	0.3%
22	Sweden	3	0.3%
23	Spain	2	0.2%
24	Ireland	2	0.2%
25	Mongolia	2	0.2%
26	Norway	2	0.2%
27	Pakistan	2	0.2%
28	Poland	2	0.2%
29	Czech Republic	2	0.2%
30	Denmark	2	0.2%
31	Argentina	1	0.1%
32	Cote D'ivoire	1	0.1%
33	Mexico	1	0.1%
34	Indonesia	1	0.1%
35	Thailand	1	0.1%
36	Turkey	1	0.1%
37	Viet Nam	1	0.1%