Rank	Countries/Territories	Count	Percent
1	United States	466	38.6%
2	China	321	26.6%
3	Germany	142	11.8%
4	Japan	53	4.4%
5	Denmark	38	3.2%
6	Spain	25	2.1%
7	France	21	1.7%
8	United Kingdom	20	1.7%
9	Singapore	18	1.5%
10	Canada	17	1.4%
11	Netherlands	14	1.2%
12	Korea, Republic of	6	0.5%
13	Romania	6	0.5%
14	Sweden	6	0.5%
15	Nigeria	5	0.4%
16	Pakistan	5	0.4%
17	Australia	5	0.4%
18	Cyprus	4	0.3%
19	India	4	0.3%
20	Ireland	3	0.2%
21	Turkey	3	0.2%
22	Ukraine	3	0.2%
23	Taiwan	2	0.2%
24	Argentina	2	0.2%
25	Lithuania	2	0.2%
26	Italy	2	0.2%
27	Iran, Islamic Republic of	2	0.2%
28	Chile	2	0.2%
29	Bangladesh	2	0.2%
30	Bosnia and Herzegovina	2	0.2%
31	Brazil	2	0.2%
32	Belgium	1	0.1%
33	Hong Kong	1	0.1%
34	New Zealand	1	0.1%