Rank	Countries/Territories	Count	Percent
1	United States	271	50.9%
2	China	59	11.1%
3	Germany	53	10%
4	Netherlands	20	3.8%
5	India	19	3.6%
6	Ireland	17	3.2%
7	Singapore	8	1.5%
8	Serbia	7	1.3%
9	Japan	6	1.1%
10	Australia	6	1.1%
11	Korea, Republic of	5	0.9%
12	Libya	4	0.8%
13	Jordan	4	0.8%
14	Argentina	4	0.8%
15	Cyprus	4	0.8%
16	Sweden	4	0.8%
17	Canada	3	0.6%
18	Austria	3	0.6%
19	Viet Nam	3	0.6%
20	United Kingdom	3	0.6%
21	Brazil	2	0.4%
22	Hong Kong	2	0.4%
23	Indonesia	2	0.4%
24	Iran, Islamic Republic of	2	0.4%
25	South Africa	2	0.4%
26	Thailand	2	0.4%
27	Saudi Arabia	2	0.4%
28	Pakistan	2	0.4%
29	Portugal	2	0.4%
30	Romania	2	0.4%
31	Russia	1	0.2%
32	Norway	1	0.2%
33	Tunisia	1	0.2%
34	Turkey	1	0.2%
35	Ukraine	1	0.2%
36	Taiwan	1	0.2%
37	Iraq	1	0.2%
38	Mauritius	1	0.2%
39	Ethiopia	1	0.2%