Rank	Countries/Territories	Count	Percent
1	United States	281	36.1%
2	China	219	28.1%
3	Germany	81	10.4%
4	Taiwan	28	3.6%
5	Singapore	21	2.7%
6	Netherlands	18	2.3%
7	France	15	1.9%
8	Canada	15	1.9%
9	Ireland	13	1.7%
10	India	11	1.4%
11	Spain	10	1.3%
12	United Kingdom	10	1.3%
13	Switzerland	8	1%
14	Hong Kong	7	0.9%
15	Australia	6	0.8%
16	Russia	6	0.8%
17	Japan	5	0.6%
18	Brazil	4	0.5%
19	Greece	3	0.4%
20	Iran, Islamic Republic of	2	0.3%
21	Cyprus	2	0.3%
22	Argentina	2	0.3%
23	Bangladesh	2	0.3%
24	Saudi Arabia	2	0.3%
25	Pakistan	2	0.3%
26	Ukraine	2	0.3%
27	Romania	1	0.1%
28	Austria	1	0.1%
29	Malaysia	1	0.1%