Rank	Countries/Territories	Count	Percent
1	United States	271	39.9%
2	China	190	28%
3	Germany	82	12.1%
4	Japan	27	4%
5	Switzerland	14	2.1%
6	Russia	14	2.1%
7	Ireland	11	1.6%
8	France	10	1.5%
9	Singapore	7	1%
10	Netherlands	6	0.9%
11	Korea, Republic of	6	0.9%
12	Canada	6	0.9%
13	Cyprus	5	0.7%
14	Denmark	5	0.7%
15	India	5	0.7%
16	Qatar	4	0.6%
17	Ukraine	2	0.3%
18	South Africa	2	0.3%
19	Sweden	2	0.3%
20	Saudi Arabia	2	0.3%
21	Indonesia	2	0.3%
22	Iran, Islamic Republic of	2	0.3%
23	Australia	1	0.1%
24	Malaysia	1	0.1%
25	Mongolia	1	0.1%
26	Norway	1	0.1%