Rank	Countries/Territories	Count	Percent
1	United States	306	36%
2	China	218	25.6%
3	Germany	75	8.8%
4	Russia	35	4.1%
5	Japan	25	2.9%
6	Australia	21	2.5%
7	Singapore	21	2.5%
8	Netherlands	17	2%
9	Ecuador	16	1.9%
10	France	15	1.8%
11	India	15	1.8%
12	United Kingdom	10	1.2%
13	Canada	8	0.9%
14	Taiwan	8	0.9%
15	Switzerland	7	0.8%
16	Korea, Republic of	7	0.8%
17	Ireland	6	0.7%
18	Spain	4	0.5%
19	Italy	3	0.4%
20	Colombia	3	0.4%
21	Cyprus	3	0.4%
22	Egypt	3	0.4%
23	Argentina	2	0.2%
24	Latvia	2	0.2%
25	Malaysia	2	0.2%
26	Iran, Islamic Republic of	2	0.2%
27	Hong Kong	2	0.2%
28	Thailand	2	0.2%
29	Turkey	2	0.2%
30	Israel	2	0.2%
31	Poland	2	0.2%
32	Puerto Rico	2	0.2%
33	Saudi Arabia	1	0.1%
34	Norway	1	0.1%
35	Ukraine	1	0.1%
36	Mongolia	1	0.1%