Rank	Countries/Territories	Count	Percent
1	United States	256	37.6%
2	China	163	23.9%
3	Germany	108	15.9%
4	Ireland	30	4.4%
5	Switzerland	16	2.3%
6	Netherlands	15	2.2%
7	Japan	14	2.1%
8	France	13	1.9%
9	India	12	1.8%
10	Singapore	8	1.2%
11	Canada	6	0.9%
12	Cyprus	6	0.9%
13	Hong Kong	5	0.7%
14	Taiwan	5	0.7%
15	Australia	4	0.6%
16	Brazil	3	0.4%
17	Egypt	2	0.3%
18	Iran, Islamic Republic of	2	0.3%
19	Lebanon	2	0.3%
20	Mexico	2	0.3%
21	Russia	2	0.3%
22	Thailand	1	0.1%
23	Ukraine	1	0.1%
24	Mongolia	1	0.1%
25	Luxembourg	1	0.1%
26	Malaysia	1	0.1%
27	Korea, Republic of	1	0.1%
28	Georgia	1	0.1%