Rank	Countries/Territories	Count	Percent
1	United States	507	42.1%
2	China	410	34.1%
3	Germany	113	9.4%
4	France	38	3.2%
5	India	18	1.5%
6	Japan	15	1.2%
7	Canada	14	1.2%
8	Korea, Republic of	10	0.8%
9	Singapore	10	0.8%
10	Austria	8	0.7%
11	Ireland	6	0.5%
12	Cyprus	5	0.4%
13	Netherlands	5	0.4%
14	Zimbabwe	4	0.3%
15	Australia	4	0.3%
16	Argentina	3	0.2%
17	United Kingdom	3	0.2%
18	Portugal	3	0.2%
19	Malaysia	3	0.2%
20	Ukraine	2	0.2%
21	New Zealand	2	0.2%
22	Luxembourg	2	0.2%
23	Indonesia	2	0.2%
24	Iran, Islamic Republic of	2	0.2%
25	Hong Kong	2	0.2%
26	Georgia	1	0.1%
27	Brazil	1	0.1%
28	Denmark	1	0.1%
29	Egypt	1	0.1%
30	Norway	1	0.1%
31	Sweden	1	0.1%
32	Switzerland	1	0.1%
33	Taiwan	1	0.1%
34	Tanzania, United Republic of	1	0.1%
35	Turkey	1	0.1%
36	Russia	1	0.1%
37	Viet Nam	1	0.1%