Rank	Countries/Territories	Count	Percent
1	United States	275	34.5%
2	China	234	29.4%
3	Germany	137	17.2%
4	India	33	4.1%
5	Japan	15	1.9%
6	Australia	15	1.9%
7	Norway	13	1.6%
8	Saudi Arabia	12	1.5%
9	Canada	12	1.5%
10	Singapore	9	1.1%
11	Netherlands	6	0.8%
12	Cyprus	6	0.8%
13	Brazil	4	0.5%
14	Argentina	2	0.3%
15	Belgium	2	0.3%
16	Latvia	2	0.3%
17	Malaysia	2	0.3%
18	Mongolia	2	0.3%
19	Hong Kong	2	0.3%
20	Spain	2	0.3%
21	Russia	2	0.3%
22	Ukraine	2	0.3%
23	United Arab Emirates	1	0.1%
24	Taiwan	1	0.1%
25	Iran, Islamic Republic of	1	0.1%
26	Ireland	1	0.1%
27	Korea, Republic of	1	0.1%
28	Bangladesh	1	0.1%
29	Czech Republic	1	0.1%