Rank	Countries/Territories	Count	Percent
1	United States	609	37.7%
2	China	604	37.4%
3	Germany	198	12.3%
4	Canada	48	3%
5	France	38	2.4%
6	Japan	20	1.2%
7	Australia	15	0.9%
8	Russia	9	0.6%
9	Singapore	9	0.6%
10	Spain	8	0.5%
11	Ireland	8	0.5%
12	Netherlands	8	0.5%
13	Argentina	6	0.4%
14	Cyprus	6	0.4%
15	Korea, Republic of	4	0.2%
16	Hong Kong	4	0.2%
17	Ethiopia	3	0.2%
18	Ukraine	3	0.2%
19	United Kingdom	2	0.1%
20	Syrian Arab Republic	2	0.1%
21	South Africa	2	0.1%
22	Egypt	2	0.1%
23	Bangladesh	2	0.1%
24	Latvia	2	0.1%
25	Norway	1	0.1%
26	Pakistan	1	0.1%
27	Poland	1	0.1%
28	Brazil	1	0.1%