Rank	Countries/Territories	Count	Percent
1	United States	478	40%
2	Germany	236	19.7%
3	China	208	17.4%
4	Netherlands	77	6.4%
5	France	30	2.5%
6	Canada	21	1.8%
7	Australia	15	1.3%
8	Korea, Republic of	12	1%
9	Ireland	10	0.8%
10	Cote D'ivoire	9	0.8%
11		8	0.7%
12	India	8	0.7%
13	Japan	8	0.7%
14	Nigeria	7	0.6%
15	South Africa	7	0.6%
16	Bulgaria	7	0.6%
17	Cyprus	6	0.5%
18	Thailand	6	0.5%
19	Burkina Faso	5	0.4%
20	Cambodia	4	0.3%
21	Indonesia	4	0.3%
22	Greece	3	0.3%
23	Hong Kong	3	0.3%
24	Singapore	3	0.3%
25	United Kingdom	3	0.3%
26	Ukraine	2	0.2%
27	Senegal	2	0.2%
28	Norway	2	0.2%
29	New Zealand	2	0.2%
30	Mauritius	2	0.2%
31	Mongolia	1	0.1%
32	Romania	1	0.1%
33	Togo	1	0.1%
34	Viet Nam	1	0.1%
35	Iran, Islamic Republic of	1	0.1%
36	Argentina	1	0.1%
37	Egypt	1	0.1%