Rank	Countries/Territories	Count	Percent
1	United States	312	28%
2	China	218	19.6%
3	Japan	208	18.7%
4	Germany	90	8.1%
5	Singapore	61	5.5%
6	Denmark	38	3.4%
7	Netherlands	17	1.5%
8	United Kingdom	17	1.5%
9	Korea, Republic of	14	1.3%
10	Ukraine	11	1%
11	Spain	11	1%
12	France	11	1%
13	Ireland	11	1%
14	Australia	11	1%
15	Indonesia	9	0.8%
16	Italy	9	0.8%
17	Russia	9	0.8%
18	Hong Kong	8	0.7%
19	Canada	8	0.7%
20	Argentina	6	0.5%
21	Cyprus	5	0.4%
22	India	5	0.4%
23	Sweden	4	0.4%
24	Hungary	4	0.4%
25	Israel	3	0.3%
26	Czech Republic	3	0.3%
27	Belgium	3	0.3%
28	Taiwan	2	0.2%
29	Viet Nam	2	0.2%
30	South Africa	2	0.2%
31	Mexico	1	0.1%
32	Cuba	1	0.1%
33	Iran, Islamic Republic of	1	0.1%