Rank	Countries/Territories	Count	Percent
1	United States	496	51.3%
2	China	127	13.1%
3	Germany	78	8.1%
4	Japan	41	4.2%
5	Australia	32	3.3%
6	Netherlands	27	2.8%
7	United Kingdom	19	2%
8	Russia	15	1.6%
9	Switzerland	14	1.4%
10	Singapore	11	1.1%
11	France	10	1%
12	India	9	0.9%
13	Canada	9	0.9%
14	Ireland	9	0.9%
15	Norway	8	0.8%
16	Portugal	8	0.8%
17	Hong Kong	7	0.7%
18	Poland	6	0.6%
19	Denmark	5	0.5%
20	Cyprus	4	0.4%
21	Latvia	4	0.4%
22	Taiwan	4	0.4%
23	Sweden	3	0.3%
24	Austria	3	0.3%
25	Belgium	3	0.3%
26	Iran, Islamic Republic of	3	0.3%
27	Korea, Republic of	2	0.2%
28	Malaysia	2	0.2%
29	Pakistan	2	0.2%
30	Mongolia	1	0.1%
31	Lithuania	1	0.1%
32	Turkey	1	0.1%
33	Ukraine	1	0.1%
34	Indonesia	1	0.1%
35	Brazil	1	0.1%