Rank	Countries/Territories	Count	Percent
1	United States	558	44.9%
2	China	408	32.9%
3	Germany	128	10.3%
4	France	43	3.5%
5	Canada	12	1%
6	Japan	12	1%
7	Korea, Republic of	10	0.8%
8	Singapore	10	0.8%
9	Ireland	7	0.6%
10	Netherlands	5	0.4%
11	India	5	0.4%
12	Greece	5	0.4%
13	Australia	5	0.4%
14	Cyprus	4	0.3%
15	Argentina	3	0.2%
16	Norway	3	0.2%
17	Viet Nam	3	0.2%
18	Taiwan	2	0.2%
19	Ukraine	2	0.2%
20	Peru	2	0.2%
21	Austria	2	0.2%
22	Bangladesh	2	0.2%
23	Lithuania	2	0.2%
24	Malaysia	2	0.2%
25	Mongolia	2	0.2%
26	Hong Kong	1	0.1%
27	Algeria	1	0.1%
28	Georgia	1	0.1%
29	Romania	1	0.1%
30	Russia	1	0.1%