Rank	Countries/Territories	Count	Percent
1	United States	581	38.1%
2	China	529	34.7%
3	Germany	139	9.1%
4	Korea, Republic of	89	5.8%
5	France	48	3.1%
6	India	22	1.4%
7	Japan	18	1.2%
8	Canada	14	0.9%
9	Singapore	10	0.7%
10	Austria	8	0.5%
11	Cyprus	7	0.5%
12	Ireland	6	0.4%
13	Netherlands	5	0.3%
14	Australia	4	0.3%
15	Zimbabwe	4	0.3%
16	Argentina	3	0.2%
17	Portugal	3	0.2%
18	Malaysia	3	0.2%
19	South Africa	3	0.2%
20	United Kingdom	3	0.2%
21	Ukraine	2	0.1%
22	Luxembourg	2	0.1%
23	Russia	2	0.1%
24	New Zealand	2	0.1%
25	Indonesia	2	0.1%
26	Iran, Islamic Republic of	2	0.1%
27	Hong Kong	2	0.1%
28	Georgia	1	0.1%
29	Bangladesh	1	0.1%
30	Brazil	1	0.1%
31	Denmark	1	0.1%
32	Egypt	1	0.1%
33	Norway	1	0.1%
34	Viet Nam	1	0.1%
35	Sweden	1	0.1%
36	Switzerland	1	0.1%
37	Taiwan	1	0.1%
38	Tanzania, United Republic of	1	0.1%
39	Turkey	1	0.1%