Rank	Countries/Territories	Count	Percent
1	United States	169	28.3%
2	China	163	27.3%
3	Japan	51	8.5%
4	Germany	39	6.5%
5	Denmark	30	5%
6	Singapore	22	3.7%
7	Thailand	19	3.2%
8	Ireland	15	2.5%
9	Iran, Islamic Republic of	13	2.2%
10	Netherlands	12	2%
11	Australia	11	1.8%
12	Korea, Republic of	9	1.5%
13	United Kingdom	8	1.3%
14	Brazil	6	1%
15	Canada	4	0.7%
16	Lithuania	3	0.5%
17	Argentina	3	0.5%
18	Norway	3	0.5%
19	Philippines	3	0.5%
20	Spain	2	0.3%
21	Hong Kong	2	0.3%
22	Indonesia	2	0.3%
23	Mexico	2	0.3%
24	Belgium	2	0.3%
25	France	2	0.3%
26	Greece	1	0.2%
27	Ukraine	1	0.2%
28	Slovakia	1	0.2%