Rank	Countries/Territories	Count	Percent
1	United States	308	46.4%
2	China	113	17%
3	Germany	109	16.4%
4	Switzerland	17	2.6%
5	Japan	16	2.4%
6	Korea, Republic of	12	1.8%
7	United Kingdom	12	1.8%
8	Canada	11	1.7%
9	France	10	1.5%
10	India	9	1.4%
11	Philippines	6	0.9%
12	Netherlands	5	0.8%
13	Spain	5	0.8%
14	Singapore	4	0.6%
15	Ireland	3	0.5%
16	Russia	3	0.5%
17	Malaysia	3	0.5%
18	Cyprus	3	0.5%
19	Egypt	2	0.3%
20	Chile	2	0.3%
21	Iran, Islamic Republic of	2	0.3%
22	Brazil	2	0.3%
23	New Zealand	2	0.3%
24	Norway	1	0.2%
25	Pakistan	1	0.2%
26	Poland	1	0.2%
27	Taiwan	1	0.2%
28	Ukraine	1	0.2%