Rank	Countries/Territories	Count	Percent
1	United States	511	33.3%
2	China	442	28.8%
3	Germany	233	15.2%
4	India	47	3.1%
5	France	37	2.4%
6	Canada	36	2.3%
7	Korea, Republic of	25	1.6%
8		23	1.5%
9	Japan	19	1.2%
10	Netherlands	19	1.2%
11	Russia	19	1.2%
12	Spain	18	1.2%
13	Ireland	10	0.7%
14	United Kingdom	8	0.5%
15	Australia	7	0.5%
16	Singapore	7	0.5%
17	Norway	7	0.5%
18	Italy	6	0.4%
19	Saudi Arabia	6	0.4%
20	Cyprus	6	0.4%
21	Sweden	5	0.3%
22	Slovenia	4	0.3%
23	Lebanon	4	0.3%
24	Bulgaria	4	0.3%
25	Israel	4	0.3%
26	Iran, Islamic Republic of	4	0.3%
27	Hong Kong	3	0.2%
28	Argentina	3	0.2%
29	Mongolia	3	0.2%
30	Turkey	3	0.2%
31	Finland	2	0.1%
32	Malaysia	2	0.1%
33	Latvia	2	0.1%
34	Peru	1	0.1%
35	Poland	1	0.1%
36	Serbia	1	0.1%
37	Switzerland	1	0.1%
38	Colombia	1	0.1%
39	Ukraine	1	0.1%