Rank	Countries/Territories	Count	Percent
1	United States	362	42.9%
2	China	275	32.6%
3	Germany	99	11.7%
4	Canada	18	2.1%
5	Korea, Republic of	17	2%
6	Singapore	10	1.2%
7	India	10	1.2%
8	Ireland	9	1.1%
9	Japan	6	0.7%
10	Taiwan	6	0.7%
11	Netherlands	4	0.5%
12	Russia	4	0.5%
13	Iran, Islamic Republic of	4	0.5%
14	Hong Kong	3	0.4%
15	Ukraine	3	0.4%
16	United Kingdom	2	0.2%
17	Sweden	2	0.2%
18	Kenya	2	0.2%
19	Argentina	2	0.2%
20	Cyprus	2	0.2%
21	Denmark	2	0.2%
22	Greece	1	0.1%
23	Philippines	1	0.1%